T a k u m a r  1 : 2.4  f = 58 mm
Produced 1954 to 1957. Serial Numbers 552xx - 972xx. For Asahiflex. Updated July 2026.

(Research Note: Since 2020 I have seen 2.26% (509 copies) of the total estimated 22,600 copies made.)

INTRODUCTION 

A final standard preset lens made for ASAHIFLEX / TOWER cameras alongside the earlier 50mm/3.5 lenses. 

DESCRIPTION

A version made late in the production period has a black focussing ring. Distance scales are singular; either in feet (> 95%), or meters (< 5%), not dual.
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LENS PRODUCTION  (∑ lenses) 
 ∑n = 509 Serial Numbers (SN) observed in 47 batches covering 19,801 SN min.< ∑ lenses < 25,281 SN max.
SN min. = accumulated total of serial numbers observed within 47 batches. 
SN max. = accumulated total of serial numbers observed between adjacent batches of other lenses. ​

​
55201 to 55205 (2/ 5)

58606 (1/ 1)

58689 (1/ 1)

58877 to 58896 (2/ 19)

59074 to 59098 (3/ 24)

59117 to 59220 (4/ 103)

59313 to 59418 (5/ 105)

59477 to 59654 (8/ 177)

59723 to 60277 (15/ 554)

60393 to 60919 (18/ 526)

61015 to 61070 (2/ 55)

61558 to 61780 (8/ 222)

62148 to 63029 (20/ 881)

63504 to 63628 (4/ 123)

65076 to 68151 (54/ 3075)

68175 to68347 (3/ 172)

 Serial Nos in 47 Batches 
(n /SN range)
​
69304 (1/ 1)

70925 to 73299 (44/ 2374)

73496 to 74651 (21/1155)

75007 to 76631 (35 /1624)

76657 to 76925 (11/ 268)

77601 to 77979 (7/ 378)

78321 to 78345 (2/ 24)

78702 to 78727 (3/ 25)

78883 to 79557 (21/ 674)

79943 to 80318 (10/ 375)

80635 to 80821 (5/ 186)

80894 to 81766 (22/ 872)

82131 to 83087 (27/ 956)

84074 to 84969 (27/ 895)

85014 to 85698 (12/ 684)

85827 (1/ 1)

85903 to 85986 (3/ 83)

86907 to 87342 (8/ 435)

88117 to 88253 (4/ 136)

88304 to 88414 (4/ 110)

88645 to 88832 (10/ 187)

88994 (1/ 1)

89671 to 89927 (7/ 256)

90159 to 90272 (7/ 113)

90353 to 90481 (5/ 128)

90810 to 91012 (5/ 202)

91037 (1/ 1)

91142 to 92103 (29/ 961)

93482 to 93814 (16/ 332)

94147 (1/ 1)

96913 to 97263 (10/ 350)