Leica IIIb

IIIb with Summar f= 5 cm 1:2 Lens = AZOOB

Code names - LYOOX (body only) 1938 Catalog + ATOOH (body only) 1946 Catalog

LEYOO = LYOOX = + XEMOO (Xenon f= 5 cm 1:1.5 ) - 1938 Catalog

ARHOO = ATOOH + ELMAR (Elmar (I) f= 5 cm 1:3.5) - 1946 Catalog

AZOOB = ATOOH + SUMAR (Summar f= 5 cm 1:2 ) - 1946 Catalog

Production era - 1938-1946; 32,705 cameras (ed. note: 1,855 more than assigned per list below)
Evolution - Eyepieces are closer together to aid switching from the rangefinder to the viewing window; Dioptric correction lever changed to concentric lever around rewind knob; four-screw spring-mounted accessory shoe
Variants - Some have added flash synchronization by Leitz; 5 were made in black (per Forum discussion [1] below)
Body - Aluminum with chrome plated brass top plate, base plate and knobs
Size L x W x H - 133 x 39 x 65 mm / 5.24 x 1.54 x 2.60 in
Reviews
- Camerapedia Leica IIIb
Forum discussion

Leica IIIb Serial Numbers

Serial numbers compiled from Puts Pocket Pod

SN Start	SN End	Product	Year	Batch
240001	241000	Leica IIIb	1937-38	1000
242001	243000	Leica IIIb	1937-38	1000
265001	266000	Leica IIIb	1937	1000
280001	286500	Leica IIIb	1938	6500
288001	290200	Leica IIIb	1938-39	2200
294001	294600	Leica IIIb	1938	600
317001	318000	Leica IIIb	1939	1000
319001	320000	Leica IIIb	1939	1000
321001	322000	Leica IIIb	1939	1000
323001	324000	Leica IIIb	1939	1000
326001	327000	Leica IIIb	1939	1000
328001	329000	Leica IIIb	1939	1000
331001	332000	Leica IIIb	1939	1000
333601	334000	Leica IIIb	1939	400
335001	337000	Leica IIIb	1939-40	2000
339001	340000	Leica IIIb	1939-40	1000
344001	348500	Leica IIIb	1939-40	4500
348601	349000	Leica IIIb	1940	400
349301	351100	Leica IIIb	1940	1800
351151	352000	Leica IIIb	1940	850
354401	355000	Leica IIIb	1946	600
TOTAL	ASSIGNED	SERIAL NUMBERS	1937-1946	30,850