Are they the oversize Point Pleasant, Blacks?
Years ago a dealer had an entire rig over 40 PP oversize decoys at the Ohio Show. Owned by one of the beer barons in the midwest. I got a low head Black duck decoy, as there were few of them. Traded it for a Point Pleasant Brant years later.
The balsa is very tough on the PP decoys that I have handled. Some of the Brant decoys have seams spits on the backs, but not so on most of the Blacks.
It appears that there are more PP decoys in very good condition than from the other two factory areas. That's just from what I have seen.
Wildfowlers are mighty fine gunning decoys IMO. The brands are always interesting, and add to the decoys mystery/history.
If I recall some were made in the 70's & 80's at Babylon, NY for DU, and collectors more so than for hunting.
my 2 cents