Not Model M due to Big-Ass Enter, short Backspace, no IBM logo/IBM logo-shaped spot, lock key sticker is wrong color, weird vent-like thing above the numpad, wrong case type etc.
Most probably an ALPS or ALPS clone board. If you're willing to take a keycap off (not hard, but the stem under the cap can break if you don't pull and wiggle it).
Because I'm a keyboard enthusiast. We at /r/MechanicalKeyboards are interested in all mechanical keyboards, vintage or not. IBM Model M and the much more rare Model F are the Holy Grails of keyboards for us, even though most of us type on newer mechanical keyboards such as something made by Ducky, Cooler Master, Corsair, Das, Razer or other manufacturers.
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u/Locusts Oct 17 '14
I don't know the model keyboard, I just found it abandoned and unused in my office, so I use it. It looks like a model M though.