What's the difference? - Nuovo Record vs. Nuovo Gran Sport

Nuovo Record

Rear derailleur (with hanger)

1020/1A

Nuovo Gran Sport

Rear derailleur (without hanger)

3500

Shared parts

These parts share the following 7 parts:

82-a

Not yet documented

82/A

84

Not yet documented

84

99

Not yet documented

99

120

Not yet documented

120

Fixing screw

Bolt

124

808-a

Not yet documented

808/A

813-a

Not yet documented

813/A