Originally Posted by Major West
I think he left HJ and took the block with him, because the HJ hats just don't quite look right now if you've been following their instagram.
This theory has been all but confirmed by HJ:
"We had new blocks made up using the vintage HJ blocks from our storage as our base design. The old blocks are in a terrible state...I am very happy with this block shape."-- Michelle
"Base design" seems to be the key phrase. The new blocks are apparently idealized re-imaginings based on what the current HJ team thinks the Raiders hat SHOULD look like. But Jack was using new molds cast off the original blocks, and took those blocks with him when he left HJ.