Clark or US BLANKS identification

Neighbor gave me this blank he had sitting on the side of his house to shape for him. He seemed to think it was Clark foam but I’m inclined to say it’s US BLANKS.

looks to be 73A with QC by “JUS”. Anyone recall that name “JUS”?

I looked at the old Clark catalog and the dims on their 73a don’t match this at all, but it’s way thicker than the 73a of today. It was over 3 1/2 when I measured it, but also thrown off by the blue density indictator. 

 

Cheers.

I’ve got one Clark 7’0A and it’s 3" thick. Catalog says 2 15/16" so could be off a hair.   From memory;  The A’s (Pat Rawson) always ran thicker that the R’s.

Got any better pics of the markings??

There’s not much else other than what you see in that one. No logo or additional markings I guess since it’s a second.

I called FGH and they said it’s definitely US BLANKS. 

 

They would know.