Try e-gunparts.com
Google Remington scoremaster model 511. Several websites have information on this .22 firearm.
Brownells Montezuma, Iowa
Gun shop, gun shows, pawn shops, egunparts, want ad, for sale ad, garage sale, estate sale
In Excellent to MINT (LIKE NEW) $150-200. They are an older inexpensive plinker.
$20,000.00 So the real answer is, in excellent condition it's a $300 gun drop's a bit quickly from there on condition.
well i have a 511 scoremaster and i was wondering the same so i bought a book that tells all gun prices. it is 250 for excellent, 200 for very good, 175 for good, 150 for fair, and 100 for poor. hope that helps.
February 1946
Remington Arms introduced this model in 1939 and discontinued production in 1963 with an approximate number of 381,267, units built. The codes AG would place the manufactured date to March of 1960.
http://www.wisnersinc.com/exploded_views/Rem_511.htm
Brownells Montezuma, Iowa
50-250 USD
grades are not marked, the date code is on the left side of the barrel near receiver (see link) those marks are inspector marks. I believe the only want you tell the grade of a 511 is the sights.