Newbie needs help identifying early 90's Bike

[florenz]

Hi everybody,
I have been reading this great forum for a long time, mostly with regard to some retro bikes I own(ed): '91 Wheeler 7700, '97 Kona Lava Dome, '93 Cannondale M800, '95 Wheeler 9000...
Yesterday I bought three "new" bikes from a lost property sale: '92 Trek 8700 composite, '91 Diamond Back Apex and an Aluminium Bike without any decals, complete XT 7-speed group, Araya RM-17 rims etc.
Can anyone help me identify what it is and if it is worth restoring?









Thank you for your support and greetings from the black forest
Frank

 

[florenz]

Some more Details:







The colour seems somewhat blueish, the tires are Ritchey Megabite, the stem and Seatpost are no-name Taiwan products...

 

[sam_white]

Not the best pic of that frame number. Is it M21100027 ? If it starts just with 'M' it is somewhat unusual.
It's also relatively uncommon to have it on the side of the seat tube.

 

[sam_white]

It could possibly suggest the frame was built in November 1992.

 

[Dface]

1 ¼ headset. Might narrow it down a bit.

 

[florenz]

Not the best pic of that frame number. Is it M21100027 ? If it starts just with 'M' it is somewhat unusual.
It's also relatively uncommon to have it on the side of the seat tube.

I will look that up again, but I think it is as you wrote above, M and eight digits. By googling I found no brand with that location of the s/n.

 

[florenz]

It is definitely an M.
The Bike seems quite lightweight and the tubing is butted.

 

[stephan]

28.6mm is stamped on the stem, that would be an 1 1/8" fork thats on the bike. Could be an early Trek, some Trek frame builds were made/welded by different subcontractors. "The other place Trek (or their subcontractors) stamped the SN is at the lower end of the seat tube"

https://www.vintage-trek.com/SerialNumbers_draft.htm (Just a thought I could be completely wrong mind)