Proofhouse.com has sn tables for Colt you can look at to see when it was made. You could get a letter from Colt, but, that will cost @ 100 USD.
Made in 1934.
Produced in 1934.
1934-1935 They were on limited production.
It was introduced in 1934. There is a website called Winchester Collector that might be helpful.
For the Colt positive special ,it was in 1934.
Made in 1934.
1934
Tailspin Tommy - serial - was created on 1934-10-29.
about 1934
about 1934
Depending on condition, between 100-$300.
50-500 USD or so