Reddit reviews Beadsmith (LPS023) 9 Piece Gothic Numbers 0-9 Metal Punch Stamp Set, 3mm
We found 1 Reddit comments about Beadsmith (LPS023) 9 Piece Gothic Numbers 0-9 Metal Punch Stamp Set, 3mm. Here are the top ones, ranked by their Reddit score.
This item is a 9 Piece Gothic Numbers 0-9 Metal Punch Stamp Set - 3mm CharactersPurpose of use for Arts, Crafts and Sewing, Jewelry MakingThis product is manufactured in United StatesPackage dimensions : 7.0 inches (H) x 3.0 inches (L) x 4.0 inches (W)
I would say 1/16" might be a bit small, although I'm sure you could get by with that size. It might be a little difficult to read. The size I use the most is 3mm which is just under 1/8". That is still small but easily readable. You might want to find or make a chisel about the same width as the date is long, (4 numerals) and stamp each pendant with a chisel line to register the digits on...keeping them straight. It doesn't have to be deep, just enough for you to see while the metal is hot.
Edit: I assume that you are in the U.S. (Burning Man) and here is a 3mm number set that is cheaper that the ones you described:
https://www.amazon.com/Beadsmith-Piece-Gothic-Numbers-Metal/dp/B009L10ZJK/ref=sr_1_2?ie=UTF8&qid=1483231827&sr=8-2&keywords=metal+number+stamps