Joined: Jun 2006
Posts: 1,434
Likes: 191
From: SW Virginia
Bikes: 62 Falcon, 58 Raleigh Lenton Gran Prix, 74 Raleigh Pro, 75 Raleigh Int, 75 Raleigh Comp, 76 Colnago Super, 75 Crescent, 80 Peugeot PX10, plus others too numerous to mention!
Pastorbob, in your two pics the one on the left has the Super Record chainrings (outer chainwheel has a kind of "V" shaped cutout where the arm attaches, the inner chainring has no oval cutouts at all), the one on the right has the NR type chainrings, where both outer and inner rings have oval cutouts in the body of the ring.