Bon grâce à vos réponses, je progresse. Je poste ci-dessous les correspondances entre numéro de série et fabricant. Ce serait donc plutôt un SUN et ça correspond tout à fait car il existe un SUN 135 2.5 MC c'est à dire exactement ce que j'ai dans les mains... (Soligor 135 2.5 MC)
Soligor Codes
1 = Tokina
2 = Sun
3 = Sun
4 = Sun
5 = ??? (perhaps Samyang)
6 = Komine
7 = Sun
8 = ???
9 = Kino
31 = ??? *
A = Komura #
H4 = Kawanon ? #
H5 = Komine #
H6 = Komine #
H7= Tokina #
H37 = Kawanon? #
M = ??? #
N = ??? #
R = ??? #
T = Tamron #
Code system. First number = Maker.
Second number = Decade
Third number = Year
*Six digit lens date code unknown.
# Letter code lens date code unknown.
"H" prefix brands:
Lentar / Focal / Soligor / Sun / Vemar
Soligor lenses were alse branded and sold as:
Reflex, Super Carenar, Prinzflex, Weltblick, Mirage, Infotar, Hanimar, Flexar, Elicar,Derek Gardenar, Porst and possibly Bushnell (Bausch & Lomb ), J.C. Penny, Pallas, Berroflex and Aetna.
(Source: MFLenses.com)