Joined: Sep 2011
Posts: 3,372
Likes: 598
From: Baltimore MD
Bikes: '72 Motobecane Grand Record, '72 Gitane tandem, '72 Raleigh Super Course, '73 Raleigh Gran Sport, '73 Colnago Super, '76 Fiorelli Coppi, '78 Raleigh SBDU Team Pro, '78 Trek 930, '81 Holdsworth Special 650B, '86 Masi GC, ’94 Bridgestone RB-T
Looks like a post-1978 NR/SR double BB. Here's my cheat sheet I use for quick reference:
NR/SR-
Italian:
Double -Pre CPSC ('78): 113mm. Post: 115.5
Triple - Pre: 118. Post: 124
English:
Double - Pre: 112. Post: 114.5
Triple - Pre:117. Post: 123
Late-80s-90s markings:
Spc -- ≻ c - record
Ssa -- ≻ croce d'aune
Ssb -- ≻ chorus
Ssg -- ≻ athena
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