This past week I did a 5 shave test on the Tatra platinum blade from the Czech Blades company . Prior to this blade I tried the Tatra blade that features only a drawing of the Tatra Mountains.... On their web site it states this is a blade for shaving and "
industrial use "... Good luck !! I found it unusable. The solid blue label Tatra platinum gave me 5 excellent shaves, absolutely flawless . Maybe not the last word in sharpness, but every shave was nick free and very smooth.