No published sn data
50-200
No published sn data. You will have to call Rossi
No published sn data that I am aware of.
50-200
No known sn data published.
100-300 or so
Your Rossi revolver fires the .38 special cartridge.
No way to tell model from jus the serial number.
Without more of a description; 10-150 USD
Back issues of Gun Digest would be a place to start.
Rossi M88: That may depend on when it was made. What is the serial number? That may help.
100-250