Here, let me help you since you can't seem to say it. The reason is because these images are not worshipped. So, using coins does not violate the Commandment:
“I am the Lord thy God, thou shalt not have any strange gods before Me.”
You guys love to claim Augustine when it suits you. Here is what he has to say:
It is asked, in what way the Ten Commandments of the Law are to be divided: whether there are four up to the commandment concerning the Sabbath, which pertain to God Himself, and six that remain, of which the first is, “Honor thy father and mother,”1 which pertain to man; or whether it is more fitting that the former be three, and the latter seven. Indeed those who say the former to be four, separate the commandment, “You shall have have no other gods before me,” that it might be a separate commandment, “You shall not make for yourself an idol,”2 whereby the worshipping of images is prohibited. However those same wish to combine into one, “You shall not covet your neighbor’s wife; you shall not covet your neighbor’s house,”3 and all the rest up to the end. Certainly those who say the first group to be three, and the second group seven, wish to combine into one whatever is commanded concerning worshipping God, that nothing before God is worshipped. These on the other hand divide the last one into two, that “You shall not covet your neighbor’s house” might be a separate commandment. In neither case is there any doubt that there are Ten Commandments, since Scripture itself testifies to this.
Still it seems to me more fitting that the first group be accepted as three, and the other as seven, because those three which pertain to God seem to make known the Trinity to those diligently contemplating. And truly the commandment, “You shall have no other gods before me,” is itself explicated more completely by the prohibition of worshipping images that follows. Further on, coveting another’s wife, and coveting another’s house, differ as much in the sins as in the commandments themselves. “You shall not covet your neighbor’s house” might also be joined to other things Scripture says, “Nor his field, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor anything of your neighbor’s.”4 Moreover coveting the wife of another seems to be separate from coveting anything else of another, since both begin thus, “You shall not covet your neighbor’s wife; You shall not covet your neighbor’s house”: both commandments begin with the statement “You shall not covet,” but it is only to the latter that it fastens the other things, saying nor his house, nor his field, nor his servant, and the rest. These all appear to have been joined together and seem to be contained by one commandment, and are separate from that commandment where the wife has been named. The commandment which says, “You shall have no other gods before me,” appears more devoted to the carrying out of those things which have been placed under it. To what indeed does this pertain, “You shall not make an idol, nor any likeness of anything which is in heaven on high, or anything on earth below, or anything in the sea beneath the earth; you shall not worship them or serve them,”5 unless to the commandment, “You shall have no other gods before me”?
I don't believe you will find I appeal to the ECFs on these matters.
And therein is the rub.....Roman Catholics DO indeed worship Mary in their actions and their writings.
• Augustine, sermon:
"Christ, you see, built his Church not on a man but on Peter's confession. What is Peter's confession? 'You are the Christ, the Son of the living God.' There's the rock for you, there's the foundation, there's where the Church has been built, which the gates of the underworld cannot conquer. — John Rotelle, O.S.A., Ed., The Works of Saint Augustine , © 1993 New City Press, Sermons, Vol III/6, Sermon 229P.1, p. 327
Augustine, sermon:
Upon this rock, said the Lord, I will build my Church. Upon this confession, upon this that you said, 'You are the Christ, the Son of the living God,' I will build my Church, and the gates of hell shall not conquer her (Mt. 16:18). — John Rotelle, Ed., The Works of Saint Augustine (New Rochelle: New City, 1993) Sermons, Volume III/7, Sermon 236A.3, p. 48.
• Augustine, sermon:
For petra (rock) is not derived from Peter, but Peter from petra; just as Christ is not called so from the Christian, but the Christian from Christ. For on this very account the Lord said, 'On this rock will I build my Church,' because Peter had said, 'Thou art the Christ, the Son of the living God.' On this rock, therefore, He said, which thou hast confessed, I will build my Church. For the Rock (Petra) was Christ; and on this foundation was Peter himself built. For other foundation can no man lay than that is laid, which is Christ Jesus. The Church, therefore, which is founded in Christ received from Him the keys of the kingdom of heaven in the person of Peter, that is to say, the power of binding and loosing sins. For what the Church is essentially in Christ, such representatively is Peter in the rock (petra); and in this representation Christ is to be understood as the Rock, Peter as the Church. — Augustine Tractate CXXIV; Philip Schaff, Nicene and Post-Nicene Fathers: First Series, Volume VII Tractate CXXIV (http://www.ccel.org/ccel/schaff/npnf107.iii.cxxv.html)
• Augustine, sermon:
And Peter, one speaking for the rest of them, one for all, said, You are the Christ, the Son of the living God (Mt 16:15-16)...And I tell you: you are Peter; because I am the rock, you are Rocky, Peter-I mean, rock doesn't come from Rocky, but Rocky from rock, just as Christ doesn't come from Christian, but Christian from Christ; and upon this rock I will build my Church (Mt 16:17-18); not upon Peter, or Rocky, which is what you are, but upon the rock which you have confessed. I will build my Church though; I will build you, because in this answer of yours you represent the Church. — John Rotelle, O.S.A. Ed., The Works of Saint Augustine (New Rochelle: New City Press, 1993), Sermons, Volume III/7, Sermon 270.2, p. 289
• Augustine, sermon:
Peter had already said to him, 'You are the Christ, the Son of the living God.' He had already heard, 'Blessed are you, Simon Bar-Jona, because flesh and blood did not reveal it to you, but my Father who is in heaven. And I tell you, that you are Peter, and upon this rock I will build my Church, and the gates of the underworld shall not conquer her' (Mt 16:16-18)...Christ himself was the rock, while Peter, Rocky, was only named from the rock. That's why the rock rose again, to make Peter solid and strong; because Peter would have perished, if the rock hadn't lived. — John Rotelle, Ed., The Works of Saint Augustine (New Rochelle: New City, 1993) Sermons, Volume III/7, Sermon 244.1, p. 95
• Augustine, sermon:
...because on this rock, he said, I will build my Church, and the gates of the underworld shall not overcome it (Mt. 16:18). Now the rock was Christ (1 Cor. 10:4). Was it Paul that was crucified for you? Hold on to these texts, love these texts, repeat them in a fraternal and peaceful manner. — John Rotelle, Ed., The Works of Saint Augustine (New Rochelle: New City Press, 1995), Sermons, Volume III/10, Sermon 358.5, p. 193
• Augustine, Psalm LXI:
Let us call to mind the Gospel: 'Upon this Rock I will build My Church.' Therefore She crieth from the ends of the earth, whom He hath willed to build upon a Rock. But in order that the Church might be builded upon the Rock, who was made the Rock? Hear Paul saying: 'But the Rock was Christ.' On Him therefore builded we have been. — Philip Schaff, Nicene and Post-Nicene Fathers (Grand Rapids: Eerdmans, 1956), Volume VIII, Saint Augustin, Exposition on the Book of Psalms, Psalm LXI.3, p. 249. (http://www.ccel.org/ccel/schaff/npnf108.ii.LXI.html)
• Augustine, in “Retractions,”
In a passage in this book, I said about the Apostle Peter: 'On him as on a rock the Church was built.'...But I know that very frequently at a later time, I so explained what the Lord said: 'Thou art Peter, and upon this rock I will build my Church,' that it be understood as built upon Him whom Peter confessed saying: 'Thou art the Christ, the Son of the living God,' and so Peter, called after this rock, represented the person of the Church which is built upon this rock, and has received 'the keys of the kingdom of heaven.' For, 'Thou art Peter' and not 'Thou art the rock' was said to him. But 'the rock was Christ,' in confessing whom, as also the whole Church confesses, Simon was called Peter. But let the reader decide which of these two opinions is the more probable. — The Fathers of the Church (Washington D.C., Catholic University, 1968), Saint Augustine, The Retractations Chapter 20.1:.