5 Dangerous Placard Signs Jersey Central Lines

This is for a lot of 5 train signs that are placed on the outside as a warning for dangerous and hazardous cargo cars.

Logo on them is marked Jersey Central Lines. A number on the cards that might be a date of 1958 is on each card.  See the top of the 4th pic.

The cards measure 10 3/4" x 10 3/4". The back is blank. Material is a thick card stock.

Original signs here in very good condition. Will be shipped flat. Free shipping within the US.