That is very cool. It looks to me like a home made version of the fancy train cases and specialty storage cases of today. It would go wonderfully with some of the fancy home made sewing boxes and stands from the 30s and 40s. My grandfather and my aunts FIL worked in plywood mills back then and some of the things they built out of plywood scraps were awesome. I have a few items they built and they are precious to me.
Cari