Always a good idea to have a gunsmith that is familiar with Parkers give it a going over. The shiny bores sound good but could also have been honed to remove pits--you need to have an idea of the wall thickness of the bores before your fire it up.

I appreciate the input.Thank you very much.
Ron

My 1876 underlifter had the serial number on the backside of the metal buttplate and on the wood underneath in chalk.