Early transportation sign, 1930s

Hi there. Another personel favorite from my collection. I don't have much history on this. I was just told by the seller they thought it was 1930s. I don't generally collect transportation pieces, so it is kind of odd that this is a top favorite for me. This is a post sign with 2 clamp holes at top centre and bottom centre. It measures 18"×12". For me, the wow factor is the patina, patina, patina:) The look just pulled me in and I just couldn't stop staring at it. Had to own it!