? about a mason jar on one side tomato engraved in glass on other side name mason running up & down 6oz 12oz & 16oz all engraved in the jar on bottom is #42 & RF on bottom/side rim it looks to be 20 O 97 OK 4. can anyone tell me is it old/new? i found it in an old shed that was being tore down. Thanks, Whistle.