A strange find in an old shop: a manual 28-80mm zoom with Nikon F-Mount, manual focus, still usable on a number of modern camera bodies like the D7000 and most professional and prosumer cameras (D3, D300...). IQ is good, but not exceptional compared to recent designs. The Osawa brand is not well known (they seem to have filed for bankruptcy in the eighties)
For more information about Osawa lenses, have a look at the photography wiki:
http://www.techniphoto.com/wiki/index.php?title=Category:Osawa