Check the listing for details. Vintage 1970s Motorcraft Clock Menu Board Sign Ford GT40 Cobra Shelby Mustang. Condition: Used. Listed at 649.00 USD. It has no cracks, but it does have a couple places where it looks like an internal line that looks like a crack. This one lights up and the clock works like it should. Cord is in nice shape. It could probably use a little more cleaning.