Joe Jackson decal bat 1915.
 

This Joe Jackson H&S mini decal bat was made in 1915.
The addition off Gowdy to the P&F decals . date them to after the 1914 world series.
The center brand changed to H&B in 1916. it is also the only decal bat. That only comes in one size.
And the diameter off the bat is smaller than the others.
I guess if this is correct. it would also apply to all off the other H&S bats .from this series off decals.