EK1 Wächtler & Lange with PKZ stamp 100 on the pin in inner part with related box the the mm type a so called the 2 type mm 100 on the pin inner part.

EK1 Wächtler & Lange with PKZ stamp 100 on the pin in inner part with related box ,the the mm type a so called the 2 type mm 100 on the pin inner part, this type of marking is harder to find.