a long shot, since it's an old Mtn. bike fork: Rock Shox Mag 21 SL (that was the state-of-the-art way back when, retailed for $hundred$) with 1-1/8" unthreaded steerer (about 233mm tall) the gold lacquer is spiderwebbed. I don't know anything about the seals or other working parts, never even tried to rebuild it, it's been sitting for years. Yours for the cost of shipping...more pix if you need them...tell your vintage Mtn. bikie friends
_GONE_