I’ve seen people use the paint crayons to mark similar stamping on guns.
https://www.amazon.com/dp/B004N84B14/?tag=atomicindus08-20
You don't need to be neat about it - either brush or spray the paint over the number, then use a rag or paper towel with a little solvent to wipe off the excess.
I’ve seen people use the paint crayons to mark similar stamping on guns.
I do the same. Whatever the color is in the bottle doesn't match what it looks like on the wrench.I just paint fingernail polish on a little heavy not worrying about the edges. Let it dry and then scrape away the excess with a razor. Goes quick, and you cant mess it up unless you scrape while it is still wet.