A 20 ga with 30" barrels is pretty scarce, but yours might be even more special. Since you are in Alta Loma, yours might be one of the run of 20s for a club up by Visalia. Club name escapes me at the moment, but the PGCA site will have someone who remembers, or Murphy will be along to remind us. I think that bunch of guns was sold through a shop in San Francisco. Probably worth getting a PGCA letter on this one.