Germany Rare Mint Numerological Error Stamp Collection. Rare mint specialized numeral error study of the stairway series; all profusely edited with many rare varieties and errors; clean and unique opportunity, a great addition for the specialist's collection.The item "Germany Rare Mint Numerological Error Stamp Collection" is in sale since Friday, August 2, 2019. This item is in the category "Stamps\Europe\Germany & Colonies". The seller is "anthonysnj-stampsandcoins" and is located in Englewood Cliffs, New Jersey. This item can be shipped worldwide.