Check old gun catalogs
Between $50-100, depending on condition.
I would not do it if it is choked more than Modified.
Not an easy question- the model designation has changed, been brought back, company has changed hands 3 times, etc. The model 88 started out as the economy model but soon became the standard model. Inthe catalogs the Topper name as used by the original company was dropped sometimes before 1978 only to be brought back by NEF/H&R 1871 in 1987
The H&R topper model 490 JR was made from 1961-1983.I hope that you find this informative.
Blue Book of Gun Values can help
You will need to include the serial number to get the year of production of your Winchester model 88 lever action rifle.
No such weapon made by Winchester. However, H&R made a shotgun called the Topper
Not much,75-120 dollars.
Around $100. Was one of my first guns
midway usa has a pistol grip that fit h&r and NEF shotguns (shop by make and model )go down to h&r on list and go from there