Quote Originally Posted by KenS View Post

Interesting Schneider info. I am now going to assume that Apo Artar is the 'design/function' of the lens manufactured by two different manufacturers, since my lens is clearly engraved with "Rodenstock".

This is new to me. The Artar originally was made by Goerz, but I presume that the Apo version was made after Goerz American went under in 1972. I believe that Schneider ended up with the rights to the Goerz designs. They must have licensed it to Rodenstock.