Needing some help verifying the size or sizes of ORIGINAL Phillips 66 ethyl shields. I have learned a lot already about fonts and grommet holes in my research but It seems there have been several sold at “reputable” auctions with varying size listings. Perhaps some folks are not being very precise on there measurements, just adding to the confusion. I have found size discrepancies on other signs in reputable books as well. For example an original sign that actually measures 29.5” being called 30”. Would love to hear some opinions on the measurement dilemma and have some owners of known original ethyl shields chime in with the EXACT measurements of theirs. Thank you in advance! It’s true this hobby is a lifelong learning experience!!