Calling all 60-2 Valiant and Lancer owners, info needed

Hyper_pak said
Bill, the big panel is a box. It was stamped.View attachment 1715864599

I kind of figured as much, but a guy could make a reasonable block off and 99.9 of the peeps in the US would never know!!
There are so few 60-2 Lancers/Valiants left in the wild in nay form!!!