|Note_en=Version with the [[Montblanc Compressor|Compressor]] filler, only known sample in red hard rubber. With the imprint of the patent number ({{Cite patent|DE|400356}}). | |Note_en=Version with the [[Montblanc Compressor|Compressor]] filler, only known sample in red hard rubber. With the imprint of the patent number ({{Cite patent|DE|400356}}). |