the Iver Johnson website has some sn info IIRC
1941
"P" prefix indicates 1953
You will have to contact H&R 1871 Inc. to find out.
50-100 USD
100 USD
50-75 or so
50-100 USD
The value of a double barrel Harrington Richardson 1900 20 gauge gun depends on its condition. This gun in excellent condition is valued between 180.00 and 240.00 as of 2014.
Please list all the markings on the shotgun. Harrington & Richardson were producing hammerLESS double shotguns as far back as 1882. sales@countrygunsmith.net
50-125 USD or so
50-$150, depending on condition.
10-125 USD or so