I have never heard of an H&R "PIONEER" model handgun. If you can send a picture to: bobell01@aol.com I will try to ID the piece for you.
$100
After doing a little research, I have concluded that it is worth around 50$. but it depends on the condition.
No such maker. However, if it is Harrington and Richardson, you will need to see if Cornell Publications still sells a book with H&R sn information.
You take it to a gunsmith who has the special tools needed to remove a barrel without damaging the gun.
Depending upon overall physical and mechanical condition, that rifle will be worth, at RETAIL, between $75 and $150.
Made by J Stevens Arms Company-NOPE.Nope. The Model 765 "Pioneer" was made by Harrington & Richardson Arms Co., Worcester, Mass.The name Pioneer was used by different gun makers, house brands, etc., just like name Ranger and a few others. But a Model 765 Pioneer was from H & R.
Made between 1948 and 1952, these were nice entry level single shot rifles. They currently sell for $100-$125, depending on condition.
Jeanette Richardson Thompson has written: 'The reveries of an old china cup' -- subject(s): Frontier and pioneer life
H&A most probably
Started production 1954-1981, redesigned in 1982, discontinued 1985.
It was made sometime between 1948 and 1952 - need letter code which is usually stamped on left side of receiver or left side of barrel, possibly under the wood/stock. It will be one of the letters: I ('48), J, K, L or M ('52), it may or may not have a serial number - but it will have a date code.
Christine Richardson has written: 'James Brindley Canal Pioneer' 'Water Ways' -- subject(s): Canals, Inland navigation 'The waterways revolution from the peaks to the Trent' -- subject(s): History