Rossi is part of Taurus, and the public records are rather spotty. However, you can contact taurus US customer service at 305-624-1115. Have the model and serial number, and they may be able to get you a date.
By the serial number. Try proofhouse.com
No known sn data published.
50-300 usd
100-300 or so
Back issues of Gun Digest would be a place to start.
No published sn data that I know of
No published sn data.
Additional Info. Made in Brazil The Garcia Corp, Washington DC SAO Leopoldo RS Serial: D307445 Good Condition
No way to value with just the serial number.
No published sn data that I know of.
1970's-1980's probably.
Check the top of the receiver and under the forearm.