Identical to first version with galvanized top,
but with chromed parts already.
Serial number range: #5.800 to 6.000
Known serial numbers:
#body __ #lens ____________ owner/source
5890 ____ 1/2-turn _________ Juhani (see photos)
5899 ____ 1/2-turn _________ U. Witte
___________________________________________
