Or it could mean "I will cultivate,care for this, enriched by you". Maybe it is a farmer's prayer. If G-d will enrich the soil with rain and sun, then I(the farmer) will cultivate it. Who knows?
I really think this is a jeton with symbols for luck on both sides. It's a gamblers coin. I would translate the legend on the 1st side with "now is a good opportunity" and the one on the back to something to the effect of that what I wrote before. Maybe someone with a degree in Latin can help?