A product called Nik-a-date. Only worth using is you have good reason to suspect you might have a better date/mm combination. OR if you want to have some fun.
Yep... "nic-a-date" works quite well, available at your LCS or online. Since I buy mine from Wizard, here's a link: http://www.wizardcoinsupply.com/product/nic-a-date.html Here's a 1917 "restored date" that was one of my first attempts using this product. There was not even a hint of the date before application, but now it's obvious. So, have some fun using it on your dateless buffs.
