This sprayed frame was included with some parts I bought a while back, was just about to build around it when I noticed two cracks in the head tube. While taking off any accessories, I noticed the derailleur hanger was slotted, looks like it might have had some quality to it. The person I bought it from said it might be a Marin, also had Spinner rigid forks. Any ideas what it might be before I put it outside? Thanks.