SMC PENTAX 67 ZOOM 1:4.5  55 ~ 100mm
Produced 1989 to 2001. Serial Numbers 8619xxx - 8824xxx.  Updated April 2024.

(Research Note: Since 2015 I have seen 1.03% (130 copies) of the total estimated 12,600 copies made.)

LENS PRODUCTION  (∑ lenses)  ∑n = 130 Serial Numbers observed in 35 Batches covering 5,741 SN min. < ∑ lenses < 19,468 SN max.
SN min. = accumulated total of serial numbers observed within 35 batches
SN max. = accumulated total of serial numbers observed between adjacent batches of other lenses.

8619181 to 8619221 (3/ 40)
8729278 to 8730061 (14/ 783)
8730672 to 8730988 (8/ 316)
8732847 to 8733543 (4/ 696)
8736297 to 8736377 (2/ 80)
8736602 to 8736708 (4/ 106)
8740107 to 8740657 (10/ 550)
8741872 to 8741933 (3/ 61)
8744818 to 8745223 (6/ 435)
8749167 to 8749378 (4/ 211)
8761592 to 8761992 (11 / 400)

 Serial Numbers in 35 Batches 
(n /SN range)
​
8770142 to 8770287 (4/ 145)
8771448 to 8771617 (4/ 169)
8777097 to 8777162 (5/ 65)
8780123 to 8780378 (6/ 255)
8785227 to 8785232 (2/ 5)
8788012 to 8788338 (5/ 326)
8793553 to 8793988 (9/ 435)
8797768 to 8797983 (4/ 215)
8811383 (1/ 1)
8811823 (1/ 1)
8811958 (1/ 1)
8812617 (1/ 1)

​​
8812782 to 8812987 (3/ 115)
8813112 (1/ 1)
8814046 (1/ 1)
8815121 (1/ 1)
8815514 to 8815556 (2/ 42)
8815781 (1/ 1)
8822141 to 8822271 (2/ 130)
8822336 (1/ 1)
8822386 (1/ 1)
8823306 to 8823451 (2/ 145)
8823461 to 8823466 (2/ 5)
8824281 (1/ 1)