4476. RARE Keystone In Circle MASON Half Gallon
Size: HALF GALLON
Color: AQUAMARINE
Closure: original Keystone marked zinc cap
Appearance: shiny glass
Condition: normal flaking of the ground mouth
Embossing: strong
Base: strong (note the base marking is identical to that of the jar in listing 4651, probably the result of a reworked mold)
Age: late 1800's
Availability: Rare or unique. Listed in the Fruit Jar Annual 2013 as only one example known in half gallon size.