100-400 USD. Last made in 1986
About $150 if its in GREAT condition and has both the cylinders .22 and .22 magnum.
$100 in good condition $125 in great condition $150 in Excellent Condition
50-1000 usd
about $300 in great condition.
At least $300 to 400, depending on condition and caliber.
50- 800 usd
Lets start with, What model is the Crome Crosman of yours. Is it a pistol or a rifle. Crosman has made over 100 different models. And there is NO model called "Crome." Resubmit you question with the model number so I and Identify the value.
Auction
10-200 usd
Anacondas in good condition typically go for about 1000 dollars. That is an average though and you can find them from 750 (great deal) to 1300.
Proofhouse.com has Colt sn data.
About 275 in good condition