Marin fork identification please

[Jimmy2021]

Hi, years ago I removed this fork from a Marin and now I'm having a clearout.
All the Marin Rockstar forks I've seen online have Marin decal all along the fork, but not this one.
Also, it has a threaded tube.
What is it?
Thanks

 

[rustyparts]

Looks to me like a 1992/93 model year Marin Rockstar 750g made by Spinner. Spinner should be stamped on the dropouts. Models using a black gloss Rockstar 750g in 92 for example being the Rocky Ridge and Team Issue. There should be a date stamp on the steerer. I would try and gently remove the surface rust. I would expect a 92 model year fork to have a date circa 91 given that the 92 model started around autumn 91.
Hope this helps a little.

 

[Jimmy2021]

Great, thanks!

 

[brocklanders023]

Yep, as above. Probably the Rocky Ridge as yours seems to be either 1 1/8th or 1 1/4.

https://www.retrobike.co.uk/archive/1992-marin-lite-catalogue.830/