It looks very much like a GSO Dob that I had for a few years from around 2003 or so. Mine was branded Southern Cross. Pretty good mirror as I recall, F5 I think, if it does badly need a recoat it might be easier just to buy a new 12 inch F5 mirror from Bintel but for $20 I think I would just give it a careful wash and enjoy using it. Does it have a lazy Susan plastic bearing on the Az axis or teflon pads? Bargain of the year I think! If it has the plastic secondary holder be careful collimating it - very easy to over tighten and damage the holder. Congratulations - what a find!
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