Beginning in 1976, model numbers appeared on the barrel, above the player's name and right of the word "GENUINE." In 1977 (perhaps even sometime during the 1976 season), "Powerized" returned.
1979 was the last year for the traditional Hillerich & Bradsby center label.
If your bat reads "Flame tempered it is a store model bat.
It is essential, once you have determined that a bat has all of the correct marking and characteristics to make it professional model bat, to determine when approximately the bat was produced.
A bat that was produced during a period after which a particular player has already retired would likely not have been used by the player during his career.
There was a player for the 1922 Cleveland Indians named Joe Rabbitt.
I also found on a game used bat autographed by Rabbit Maranville, estimated value ,000.