Pennfield sign porcelain is single sided measures 24 x 14
Freedom Oil and gasoline porcelain Flange measures 24 x 20

to My knowledge the penfield should be 18 x 30 inch and double sided
the Freedom should be 18 x 14 and the originals have a maker mark on only one side on bottom edge of the sign
honestly think yours are not original

I did not buy them I was interested in them but I feel the same way Incorrect .. fantasy signs
thank you