Greg, I doubt it is a Scott since it has what appears to be a patent use number, 29,229. I'm not aware of Scott built guns having a use number on them. The licensing would be for the Scott top lever. It also has the Purdey under bolt, which Scott also licensed to all makers outside of London.
Nicely restored gun. I imagine a dealer would add 50% to 100% to his asking price over a similar less prestigious name. Hard to say and I hope others more knowledgeable will chime in. Would like to see more pictures.