This is a high quality replica of a Holden Dealer sign from the 1960's and 1970's. It is a metal version of the original back-lit acylic sign.  A back-lit replica would cost hundres of dollars per letter and the originals are rare and worth thousands at auction.
 
This sign is 4.2 meters in length (about the same as a Torana GTR XU-1). 
 
Parking your Holden beneath this dealer replica sign, will remind you of the look and feel of a Holden showroom.
 
You can mount the panels directly to your wall horizontally, or vertically (if your shed height is greater than 4.2 meters.)