NOS (New-Old Stock) rectangle number plate made by Neal Enterprises.
Injection molded plastic - there are no holes in this place and zip ties are not included. You must cut your own holes to mount this plate.
Dimensions: 10 3/16" X 7 1/4"
I don't know the age of the plate, but we got them direct from Neal Enterprises and the owner confirms they have not been made in quite a while.