Will depend on the condition of the rifle. The best way to determine what one WOULD sell for, is to look at what one HAS sold for. If you visit gunbroker.com,and auctionarms.com,search for your rifle in the "closed auctions, last 90 days". If one has sold, look at the description and photos, and see how that compares to your rifle.
ABOUT $700
your ruger No.1 tropical is valued at 875.00 in new condition.
After doing some research it appears the value of a Ruger Model 1 rifle is between $500-$1000 depending on condition and caliber.
50-200 or so
Ruger has a sn function on their web site. Value range from 100-250 USD Ruger has a sn function on their web site. Value range from 100-250 USD
$100-$225, depending on condition.
1965
50-200
Ruger will tell you if you phone customer service.
Ruger's website has extensive sn data. 75-175 or so
50-175 USD
100-650 usd