Now to another fun bit, the lettering.
On the original scope the lettering was white, this is a really simple and effective technique to get the same look.
Tools needed. 1 x white crayon, a soft cloth and a modeling knife.
First rub the crayon into the groves, I like to use a reasonable force to embed it right in to the lettering.
then simply, wipe it off, towards the end of the scope, this may take a bit of work, so when the friction from wiping creates a small amount of heat the wax softens and most will come off.
I then lightly scrape, and i mean, lightly any surface wax that doesn't come away.
Then for an added touch of realism, i like to dig a little out of some of the letters, it gives that used worn look.