That's a great pickup.
Some useful info is available here. Whiteymet is the best expert for all things Hartland.
The statues with the lowest production runs are the rarest. Groat and Colavito are the hardest to find. But generally I've found those where the player is in a twisted pose can suffer from separation at the seams. I found it harder to find a good Colavito than Groat.
Heres some quick production stats for you:
Production Runs
Statue Production Dates Number Produced
Hank Aaron Statue 1958-60 150,000
Luis Aparicio Statue 1960-63 100,000
Ernie Banks Statue 1960-63 100,000
Yogi Berra Statue 1960-63 150,000
Rocky Colavito Statue 1960-63 10,000
Don Drysdale Statue 1960-63 50,000
Nellie Fox Statue 1960-63 100,000
Dick Groat Statue 1960-63 5,000
Harmon Killebrew Statue 1960-63 50,000
Mickey Mantle Statue 1958-60 150,000
Roger Maris Statue 1960-63 100,000 Maris was not sold with a tag
Ed Mathews Statue 1958-60 150,000
Willie Mays Statue 1960-63 100,000
Stan Musial Statue 1960-63 100,000
Babe Ruth Statue 1958-60 150,000
Duke Snider Statue 1960-63 50,000
Warren Spahn Statue 1958-60 100,000
Ted Williams Statue 1960-63 150,000
Bat Boy Statue 1960-63 5-10,000 There was no box for the Bat Boy (it came in bubble wrap)
Minor Lgr White Base 1960-63 5,000
I'm just getting on a flight. I can share more details soon.
You could also check out
https://hartlandstatues.com/history/ for more info.