Try Pinball Resource. Prep is important. I’ve done 3 and not bad at all. Take pictures. The numbers do have a series so make sure you keep them in order.

This may be of some help for you.
http://www.pinrepair.com/roto/

Try PBR, that's where I bought these for a Cowpoke.

20230223_124655 (resized).jpg

Ah, sorry, didnt realise that. I fitted these some months back.

I made some for a Silver I was working on...it's not hard to do. Printed the letters on adhesive-backed laser printer paper and put an adhesive mylar square over them. Looks good to me.

Silver roatary wheel.pdf

If you can't find anything at PBR and want me to do something for your machine, let me know.

He has King of Diamonds roto target decals (bunches he said) but not the daisy style. I made a replacement set using a technique like above from a color copy that I made off the repro set I bought, that way I can reuse the hard to obtain repro as my standard when the copies wear out. Sharpie the original number on the back of the metal targets to keep the order straight. 3M medium double sided adhesive or similar medium THIN backing-free adhesive (gorilla tape is too thick IMO) to mount helps prevent the ball from pulverizing the copy paper which leads to separating.