SMC PENTAX 67 1:2.8  165mm
Produced from 1989 -. Serial Numbers 8528xxx - 8825xxx.  Product No.  Updated April 2024.

(Research Note: Since 2015 I have seen 1.00% (189 copies) of the total estimated 18,800 copies made.)

LENS PRODUCTION  (∑ lenses)  ∑n = 189 Serial Numbers observed in 52 Batches covering 9,225 SN min. < ∑ lenses < 28,418 SN max.
SN min. = accumulated total of serial numbers observed within 52 batches
SN max. = accumulated total of serial numbers observed between adjacent batches of other lenses.

8528298 to 8528346 (4/ 48)
8547441 to 8547676 (5/ 235)
8549270 to 8549887 (7/ 617)
8550446 (1/ 1)
8552231 to 8552237 (2/ 6)
8552340 to 8552367 (2/ 27)
8552446 (1/ 1)
8552553 (1/ 1)
8554238 to 8554344 (6/ 106)
8554529 (1/ 1)
8554560 to 8554715 (3/ 155)
8554786 to 8554832 (2/ 46)
8554900 to 8554910 (2/ 10)
8555101 (1/ 1)
8563920 to 8564797 (11/ 877)
8673596 to 8673878 (5/ 282)
8673917 to 8674408 (9/ 491)

 Serial Numbers in 52 Batches 
(n /SN range)
8677829 to 8678065 (12/ 236)
8678210 (1/ 1)
8681778 to 8682190 (8/ 412)
8688640 to 8689141 (7/ 501)
8693945 to 8694146 (2/ 201)
8698170 to 8698427 (11/ 257)
8701983 to 8702385 (8/ 402)
8706470 to 8707140 (10/ 670)
8717509 to 8718005 (9/ 496)
8725872 to 8726604 (11/ 732)
8738752 to 8739222 (4/ 470)
8746351 to 8746512 (3/ 161)
8765482 to 8765608 (2/ 126)
8769263 (1/ 1
8771277 (1/ 1)
8773233 to 8773257 (3/ 219)
8775708 to 8775792 (3/ 84)

​
8777377 (1/ 1)
8781582 (1/ 1)
8783702 (1/ 1)
8784848 (1/ 1)
8788437 to 8788497 (2/ 60)
8790868 to 8790968 (2/ 100)
8795607 to 8795918 (6/ 311)
8798092 (1/ 1)
8798583 to 8798682 (2/ 99)
88127xx (1/ 1)
8814413 (1/ 1)
8816048 to 8816292 (2/ 244)
8819838 to 8819863 (2/ 25)
8822277 (1/ 1)
8823806 (1/ 1)
8824392 (1/ 1)
8824502 (1/ 1)