Kromex Serving Set 4" polka dot glass, lid, & 2 silver chrome plates VTG 50s MCM

Kromex ? Hazel Atlas ? Serving Set glass jar, lid, & 2 plates EUC, excellent vintage condition. some spots of tarnish and rust on the metal lid, pictured. Vintage 1950s ? 60s ? Mid-Century Modern heavy bottomed glass textured bubbles, convex on the inside, smooth on the outside chrome silver lid with yellow metal handle sits perfectly on top looks like a little strawberry ^_^ maybe meant to be a small serving jar for preserves, caviar, sugar, ... ? 2 silver chrome plates, (actual material content unknown) one with a smaller indent perfectly fits the glass, and the other with a larger indent, perfectly fits the lid shiny on the top brushed metal, matte on bottom polka dot glass: height 4 width at top 3.75 width at bottom 2.25 lid: 2 height 4 width plates: 6.25 diameter questions? please ask! grandma's collection shipping weight 2lb 8oz in 9x9x9 box