I did not try & clean the binoculars because i did not want to damage them whatsoever. I looked through the lens and everything looks great! WWII German Original Dienstglas 6x30 DDX 199295 Binoculars Includes Leather Case.This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\Germany\Personal, Field Gear". The seller is "dixielandmarket" and is located in this country: US. This item can be shipped to United States.