Spring Cleaning: 1940s Oahu Amp Duo Photo

I'm swapping around ephemera in the shop and so some of my collection is for sale (and framed, too).

This one is an original 5x7 in a newer black frame. I love the old Oahu "suitcase" style amp with both the lap steel and electrified Epiphone archtop sharing the inputs. What a cool/odd sound that must've been!