Blue Book of Gun Values, old gun catlaogs, gun shops, gun shows.
50-100 USD or so
Herbert Schmidt.
25-125 usd
value of any firearms depends on overall condition and collectibility. the h&r is not a great collector piece. Also, there is no 22 cal 'shotgun' ??? check the gun barrel to see caliber listed.
Old gun catalogs can give you an idea
BLue Book of Gun Values
Blue Book of Gun Values
Try Numrich Gun Parts Corp.They have lots of parts for most any gun. Good people to deal with.
First, it is Harrington & Richardson. Second- it depends. What is marked on the gun? H&Rs were made in .22 Short, .22 long, .22 Long Rifle, .22 Special, .22 WRF and .22 Magnum.
50-150 USD or so depending on condition
6,000 liters