1923-1933 Vintage Ball Perfect Mason Canning Jar Half Gallon Ribbed

Vintage square clear glass Ball Perfect Mason Half Gallon Canning Jar (no underscore) with ribbing and concentric circles on the bottom with the number 0 The square shape and vertical ribbing really make this Half Gallon Jar special. This jar is in excellent condition with no chips or cracks. Might need a good scrub, though :) #40 (for my records only)