The last "1" is different than the other 1's. Note how it is perfectly aligned, straight lines on the bottom and right side. That's Photoshop!
The "1" in 1961 is different. Note that the date is colored green and the "1" is black. Fake!
Also, the last '1" is not solid black like all the other numbers, either it was blurred with a Photoshop tool or it is slightly transparent and the background is bleeding through.