Side view of the featured Diesinger #31 / Peter Willems #285 
Basemark on a Marzi & Remy stein. 
This stein was made from the mould of Diesinger #31. Whether it was made in the Diesinger factory is up for debate.
Base marks of the above stein showing PW and his mould number #285. There are no Diesinger base marks. 
Side view of the featured Diesinger #31 / Peter Willems #285 
Basemark on a Marzi & Remy stein. 