Durst Neonon 50/2.8 [Pentax V2]

AKA Agfa Magnolar enlarger lens. Made in Japan (Pentax?). Version 2 is rare and has a four-row stippled rubber aperture ring that functions as a stepless aperture selector. Rear element housing may be slightly shorter than V1.

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Dimensions	50 mm
Focal Length (mm)	50
Max Aperture (f)	2.8
Min Aperture (f)	22
Aperture Blades	8 (Straight)
Elements	6 / 4
Rear Mount	M39
Production	1978-c.1985
Serial Numbers	521689