So in my ongoing research for a fair price on a .22HP, I ran across this on Gun Broker item number 788602748. The auction is ended.
Does not seem to bad at $650. Some clod had to checker it but, it looks like it has a good bit of original finish on the metal. If it's as good as the seller says it is, might be ok at $650.

Any thoughts?

All depends on what you want, what you want to spend, and how much time and energy you want to invest to find it.

It sounds like a shooter grade HP not a collectible. To that end, its value would hinge upon its bore condition IMO.