Sawing out individual small letters of identical size is tedious.
Plus it left a great deal of waste when working with gold and silver
I used to get stamped out Roman style letters from T.B Hagstoz (709 Sansom St, Phila,,Pa) when I was buying gold & silver for my engraving projects.

It's an old school jewelry supply house with very helpful people to assist you.
I used to buy the letters from them for special projects when requested. They had them is some various sizes, but not everything on the planet of course.
Probably different fonts as well but I don't recall
ever asking for anything but Roman style letters.
I bought all of my gold and silver from them for 50yrs of working.

The letters (if they still offer them) will be simple, accurate cut outs but w/o any pegs on the back.
I used to simply soft solder a brass brad(flat head nail) to the back side using the head as the base up against the letter.
More than enough strength once inletted and epoxy glued into place.
Same thing with the gold ovals I used to supply. Those were 10k and they came from Hagstoz as well.

10k yellow gold was the usual choice for letters as well from customers though 18k looks very nice with a bit more color to it. The 24k expense (especially these days w/ $3500/oz gold!) can
be avoided that way and still get some bling to it.
Most inletted ovals were 10, 14 or 18k at most. Any softer and the engraving would wear off easily.

Give them a call,,they have an 800# so that's easy.
The order can be charged over the phone.
Shipping is quick if they are anything like my past experiences.

Hope this helps


https://jrow.org/t-b-hagstoz/