I see good ones in the $150-200 range. Neat revolvers. Enjoy yours.
50-200 USD
904-380-7572 Jeff Wheeler HR
"AU" prefix indicates 1980
No sn data for that model I can find.
'AH' serial prefix indicates manufacture in 1971.
50-100 USD
No sn data published
50-100 or so
10-100 usd
Impossible to answer without a serial number.
Blue Book of Gun Values