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Produced May 1965 to 1971. SN range 2113xxx - 4720xxx. AOCo Product No. 43801. Honeywell Pentax Cat.No. 7082. Updated Sept 2024.

(Research Note: Since 2010 I have seen 2.74% (960 copies) of the total estimated 35,000 copies made.)

INTRODUCTION

DESCRIPTION

VARIATION

NOTES

LENS PRODUCTION  (∑ lenses)  ∑n = 960 Serial Numbers observed in 190 batches covering  29,239 SN min. < ∑ lenses <  40,852 SN max.
SN min. = accumulated total of serial numbers observed within 190 batches
SN max. = accumulated total of serial numbers observed between adjacent batches of other lenses.
One uniform style: Letter font is "cursive", oval  with open "4". The serial number is after the lenses name; no comma follows the maker's name.
Aperture ring has coarse knurling. Focus ring formula and Aperture ring formula is consistently F=10/12 and A=10/10 throughout.

​
2113267 to 2114976 (41/ 1709) 9/9
2496347 to 2506146 (222/ 9799)
2506223 to 2506774 (12/ 551)
2506826 to 2506899 (2/ 73)
2506917 (1/ 1)
2507045 to 2507167 (7/ 122)
2507182 (1/ 1)
2507267 (1/ 1)
2507296 (1/ 1)
2507306 to 2507347 (2/ 41)
2507406 to 2507514 (6/ 108)
2507560 to 2507606 (2/ 46)
2507614 to 2507622 (2/ 8)
2507649 (1/ 1)
2507743 to 2508014 (6/ 271)
2508125 (1/ 1)
2508145 (1/ 1)
2508159 to 2508172 (3/ 14)
2508293 to 2508306 (4/ 13)
2508339 to 2508471 (6/ 132)
2508522 (1/ 1)
2508542 (1/ 1)
2508557 to 2508643 (5/ 86)
2508675 to 2508718 (4/ 43)
2508730 to 2508821 (5/ 91)
2508867 to 2508876 (2/ 9)
2508903 (1/ 1)
2508980 (1/ 1)
2509026 (1/ 1)
2509130 (1/ 1)
2509151 (1/ 1)
2509160 (1/ 1)
2509188 to 2509228 (2/ 40)
2509252 to 2509333 (5/ 81)
2509378 to 2509403 (2/ 25)
2509462 to 2509505 (2/ 43)
2509680 to 2509916 (6/ 236)
2510061 (1/ 1)
2510127 (1/ 1)
2510180 to 2510210 (2/ 30)
2510329 to 2510390 (3/ 61)
2510417 (1/ 1)
2510538 to 2510683 (8/ 145)
2510895 to 2510928 (3/ 33)
2510948 (1/ 1)
2510985 to 2511070 (5/ 85)
2511138 to 2511139 (2/ 2)
2511203 to 2511255 (2/ 52)
2511376 to 2511475 (7/ 99)
2511507 (1/ 1)
2511554 (1/ 1)
2511600 to 2511857 (10/ 257)
2511860 (1/ 1)
2511902 (1/ 1)
2511970 (1/ 1)
2511981 to 2512004 (3/ 23)
2512036 (1/ 1)
2512101 to 2512152 (2/ 51)
2512229 to 2512260 (2/ 31)
2512321 (1/ 1)
2512383 to 2512394 (2/ 11)
2512543 to 2512575 (3/ 32)
2512705 (1/ 1)

Serial Numbers in 190 Batches 
(n /SN range)

2512877 (1/ 1)
2512912 (1/ 1)
2512935 to 2512967 (3/ 32)
2513064 (1/ 1)
2513123 (1/ 1)
2513278 to 2513287 (3/ 9)
2513299 (1/ 1)
2513335 (1/ 1)
2513363 (1/ 1)
2513458 to 2513506 (5/ 48)
2513856 to 2513985 (8/ 129)
2514170 (1/ 1)
2514381 to 2514457 (4/ 76)
2514532 to 2514583 (2/ 51)
2514651 (1/ 1)
2514688 to 2514697 (2/ 9)
2514822 to 2514880 (6/ 58)
2514900 to 2514924 (3/ 24)
2514937 to 2514942 (2/ 5)
2514974 to 2549975 (2/ 2)
2515108 to 2515114 (2/ 6)
2515129 to 2515142 (2/ 13)
2515229 to 2515578 (11/ 349)
2515692 (1/ 1)
2515764 to 2515791 (3/ 27)
2515949 (1/1)
2516029 (1/ 1)
2516107 (1/ 1)
2516183 to 2516188 (2/ 5)
2516204 to 2516213 (2/ 9)
2516219 to 2516265 (3/ 46)
2516351 (1/ 1)
2516502 to 2516528 (5/ 26)
2516548 to 2516558 (2/ 10)
2516619 (1/ 1)
2516688 to 2516890 (7/ 202)
2517016 to 2517056 (2/ 40)
2517162 (1/ 1)
2517218 (1/ 1)
2517332 (1/ 1)
2517417 (1/ 1)
2517439 to 2517557 (3/ 118)
2517573 to 2517612 (3/ 39)
2517739 (1/ 1)
2517802 (1/ 1)
2517823 (1/ 1)
2517848 (1/ 1)
2517877 to 2517949 (4/ 72)
2518066 to 2518147 (5/ 81)
2518184 (1/ 1)
2518266 to 2518429 (7/ 163)
2518493 to 2518496 (2/ 3)
2518542 to 2518564 (2/ 22)
2518612 (1/ 1)
2518664 to 2518714 (2/ 50)
2518814 to 2518830 (4/ 16)
2518895 to 2518972 (7/ 77)
2518995 (1/ 1)
2519060 to 2519153 (5/ 93)
2519183 to 2519242 (5/ 59)
2519335 to 2519374 (2/ 39)
2519429 (1/ 1)
2519489 (1/ 1)

2519578 to 2519583 (2/ 5)
2519663 (1/ 1)
2519692 (1/ 1)
2519753 (1/ 1)
2519789 (1/ 1)
2519845 (1/ 1)
2519878 (1/ 1)
2519901 to 2519904 (2/ 3)
2519998 (1/ 1)
2520097 to 2520131 (2/ 34)
2520282 to 2520355 (4/ 73)
2520390 to 2520401 (2/ 11)
2520450 (1/ 1)
2520619 to 2520679 (4/ 61)
2520855 (1/ 1)
2520915 (1/ 1)
2520982 to 2521010 (3/ 28)
2521057 to 2521140 (4/83)
2521172 to 2521295 (3/ 123)
2521383 to 2521415 (3/ 32)
2521493 (1/ 1)
2521565 to 2521569 (2/ 4)
2521621 (1/ 1)
2521657 to 2521675 (3/ 18)
2521773 to 2521788 (3/ 15)
2521816 (1/ 1)
2521861 to 2521901 (3/ 40)
2522019 (1/ 1)
2522057 (1/ 1)
2522162 to 2522187 (2/ 25)
2522223 to 2522314 (4/ 91)
2522331 to 2522364 (4/ 33)
2522584 to 2522592 (2/ 8)
2522630 (1/ 1)
2522647 to 2522980 (10/ 333)
2523135 (1/ 1)
2523232 to 2523261 (2/ 29)
2523314 to 2523322 (3/ 9)
2523349 to 2523352 (2/ 4)
2523463 to 2523711 (8/ 248)
2523786 (1/ 1)
2523877 to 2524084 (7/ 207)
2524133 to 2524136 (2/ 3)
2524232 (1/ 1)
2524436 (1/ 1)
2524464 (1/ 1)
2524679 (1/ 1)
2524728 (1/ 1)
2524825 to 2525170 (16/ 345)
2525199 to 2525244 (3/ 45)
2525340 to 2525588 (8/ 248)
2525607 to 2525701 (4/ 94)
2525779 (1/ 1)
2525787 to 2525799 (2/ 12)
2525835 to 2525869 (2/ 34)
2526011 (1/ 1)
2526168 to 2526375 (5/ 207)
2526520 to 2526767 (4/ 247)
2526887 (1/ 1)
2526966 to 2526970 (2/ 4)
2527121 to 2527157 (2/ 36)
2527203 to 2527285 (3/ 82)
4290010 to 4299844 (201/ 9834)
IR mark R becomes I
4720371 to 4720613 (4/ 242)
43802 SN starts