Around $600, depending on model and condition.
$500-$700, depending on exact model and condition.
Storm ruger 44 magnum 10 inch barrel What is it worth
100-350 USD
Ruger uses a model number, such as 0804, but the suggested retail price of a new Super Blackhawk stainless 44 Mag is $829.
Ruger's web site has sn data.
A call to Ruger will get you the date it was made
Ruger's web site has a sn date function
500 or so
Blackhawk.
100-400 USD or so
$100-$300, depending on condition
New Models did not begin production unitl @ 1973