ANTIQUE FOLK ART 3-DIMENSION "SPIRALSPHERE" PAINTING

this is a quite interesting painting i just acquired at a high end thrift shop on the upper east side in nyc,in a very rich area.it is quite interesting every time you look at changes. looks 3-dimensional.it is in mint condition.it measures 16x12".in high end frame measures 17x13".in mint condition.i dont see any signature maybe under frame.a extreme rare find.