As long as your tag is BIGGER than 2x3, one is okay. If it is 2x3 you need two of them.
I think the individual letters on squares would work for 123SA's swap, but not this one.
Wait -- a topper wasn't required, so wouldn't the squares just count as squares? they would still have be embellished two ways though -- so the letters and ink or the squares embossed and then letters.
Uh-oh I better go check the requirements again. I did not make toppers.