Special macro lens for the FED 1938/1939 production. This special lens is not rangefinder coupled but goes from infinity up to 1:1 scales in continuous focusing.
The optics is the renowned Industar 10 3.5/50.
Non numbered macro lenses can be found. According to some sellers, they could have been made in 1949 or 1950.
At least two pre war series were made: with pins (written 1st on the list) and without (written 2nd). Probably to help the owner to screw or unscrew the lens...
serial range: 10.xxx - 15.xxx
Registered serial numbers:
3----------1st----Jacques coll.
107-------1st----DVD.
11012----1st----Fotomuda.
11036----1st----Chris Sabine.
12075----1st----seen on eBay.
13923----2nd----Christian G. (Niko80).
13947----2nd----seen on eBay.
14049----2nd----Juhani.
14568----2nd----Jacques coll.
14764-----id-----Alain Berry collection.
14875----2nd----imcphoto collection.
15125----2nd----seen on ebay.
15136----2nd----DVD collection.
15343----2nd----Jim McGee.
15446----2nd----David Tomlinson.