Check the ‘95 Marin catalogues in archive. The IFT had drilled wishbone seat stays that year for sure. There might be a close up image of these if memory serves.
Not any kind of Marin imho. Decals look like 1995. Rest doesn’t.Vintage Retro Marin Mountain Bike | eBay
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The reason for asking on Ebay local to me - not sure on the frame numbers either.