This is a vintage plastic apron from the late 50s to mid 60s. Unlabeled, it's a lightweight sheer plastic with orange, yellow and white printed stripes. It's trimmed with black rickrack at the hem and at the shaped side pocket. Ties at the gathered waist with a rather short self-fabric tie.
 
Pre-owned, used; in good condition with no stains or tears. The plastic is wrinkled from storage. It can be pressed VERY carefully with a barely warm iron and protective cloth between the iron and the plastic.
 
Shown on a size M/L dressform. Actual apron measurements are--
Total waistband and both side ties- 53 1/2" long
Gathered upper apron-18" across 
Length-18" including 2" wide waistband, measured down to the longest hem scallop