Raleigh Record, Record Ace, Gran Prix, all came with cottered steel cranks in the seventies. Prolly a couple of models I fergot.

The best of these is the Gran Prix. The frames are worth a small amount (sub fifty bucks, more than twenty). Nice lug work, wrap around seat stays. Nottingham/Carlton ones are worth more than the Dutch/Gazelle ones as a rule.

Some seventies Gran Prixs came with a beautiful Bramptom Flip flop hub as standard equipment, so you could flip the rear wheel about, slap on a track cog and track lockring, and go fixed. These hubs are worth more than the rest of the bike.