Are these Cook Bros cranks?

[Pierre]

They look quite like Cook Bros, but they're fluted down the sides, not on the back. I've had them for absolutely ages, they came on an old Marin Team Titanium I bought that had had lots of stuff upgraded on it. They're beautiful, but the non-drive side crank cracked so I removed them.

I'm debating putting them on evilBay with a load of other random stuff I want to clear out but don't really know what to charge for. If anyone can identify them I'd appreciate it!

 

[gtturbo]

No Topline/Grafton. I forget how to tell the difference now as Topline made these cranks for Grafton as well but I think those are Topline SL's.

 

[SantasLoneCruzer]

Still very nice even if not CB. What era are these?

 

[Pierre]

Ace, thank you @gtturbo - it's given me some info to investigate. From a bit of searching, it looks like the Grafton Speed Sticks had a more rounded back behind the pedal threads, whereas the Toplines have that flattened shape.

Graftons also look like they have a bolt-on spider, whereas the Toplines have a riveted-on spider, which in my view looks nicer but I'm guessing means the spider is not replaceable.

 

[madjh]

Top line, CB don´t have that shape.