Super-Multi-Coated FISH-EYE-TAKUMAR / 6x7   1:4.5 / 35
Produced 1971 to 1980's. Serial Numbers 4917xxx - 8573xxx. AOCo Product No.46100.  Updated March 2024.

(Research Note: Since 2015 I have seen 3.19% (166 copies) of the total estimated 5,200 copies made.)

LENS PRODUCTION  (∑ lenses)  ∑n = 166 Serial Numbers observed in 24 Batches covering 2,885 SN min. < ∑ lenses < 7,518 SN max.
SN min. = accumulated total of serial numbers observed within 24 batches
SN max. = accumulated total of serial numbers observed between adjacent batches of other lenses.

4917924 to 4918003 (4/ 79)
4947187 to 4947363 (11/ 176)
5316933 to 5317030 (6/ 97)
5324422 to 5324427 (2/ 5)
5419000 to 5419027 (5/ 27)
5536797 to 5536878 (6/ 81)
5551301 to 5551471 (11/ 170)
5721435 to 5721509 (7/ 74)

 Serial Numbers in 24 Batches 
(n /SN range)
574461x to 5744742 (7/ 82)
5824327 to 5824434 (10/ 107)
6143990 to 6144046 (4/ 56)
6167338 to 6167391 (4/ 53)
6262271 to 6262314 (3/ 43)
6590487 to 6590536 (9/ 49)
7560630 to 7560748 (6/ 118)
7567969 to 7568203 (9/ 234)

8248259 to 8248670 (17/ 411)
8276831 to 8276879 (2/ 48)
8277479 to 8277832 (10/ 353)
8466034 to 8466214 (8/ 180)
8468332 to 8468502 (7/ 170)
8504135 to 85043242 (12/ 212)
8570039 to 8570098 (3/ 59)
8573463 (1/ 1)