.410 ammo
The value of ANY gun is based on exact make, model and condition. The Topper Jr is available in both .410 and 20 gauge. A .410 in excellent condition is around $150-$175.
Around $100. Was one of my first guns
Why not offer the item on E Bay,with a reserve price of your own lowest estimate?.
410. Have it checked by a gunsmith to verify what length 410
Harrington & Richardson (H&R) the maker of the Topper shotgun, was located in Worcester Mass.
Recommend you ask a gunmsith for assistance.
Depending on condition, around $125.
Try e-gunparts.com
The H&R topper model 490 JR was made from 1961-1983.I hope that you find this informative.
50-100 USD depending on condition.
About $75-90 depending on condition.