Certainly looks like an Overbury's. Needs some work and no frame size. "And I haven't tried removing the bottom bracket but part of it has broken off in storage." :| . I'll leave positive identification up to the experts.
http://www.ebay.co.uk/itm/162686715655?ul_noapp=true
http://www.ebay.co.uk/itm/162686715655?ul_noapp=true
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