My Remington 81 ser#162xx was manufactured 07/1941
There should be a two letter code on the barrel. you can cross reference the two letter code to a production date on Remingtons website.
1500.00
$400.00
Impossible to answer without the sn or date codes.
the 740 is a very old model, they sell for $250- $350 in this area
$300 without a scope in 95% condition!!
Check the date code stamp on barrel (see related link) by serial only a call to Remington can give you that answer.
There have never been any recalls on the Remington Model 742 that I'm aware of. The Remington 742 is now an obsolete model and was replaced with the Remington Model 7400. The bolt received an upgraded design along with the magazine catch/release. At one time Remington was offering a Model 7400 as a replacement for the Model 742, if you sent them your Model 742 along with $350.00. Is there a problem with the 742 that you have?
They only made ~250K of them from 1955-1959 obviously that's near the end by serial I can't tell you but the barrel with be marked with the date code for month and year. See related links for details.
At store in Northwest Ct. I saw some ranging in price from $150-$250, depending on condition.
Check barrel code on Remington Society of America: http://remingtonsociety.com/rsa/questions/barrelcodes
The Model 81's are all date code stamped, go to the Remington Society of America there is a diagram (click it) and a table which explains the codes (month/year)
Assuming it is the Model 81 Woodsmaster, excellent condition examples in .35 Rem are bringing more than $400. sales@countrygunsmith.net