[ QUOTE ]
I knew a guy that went into a chevy dealer and found(bought) literally hundreds of radio-block off plates that had been removed from cars and just stored for many years. Apparently this dealer ordered all his cars w/o radios and installed radios themselves after the cars were delivered.
[/ QUOTE ]
I believe that is where most of these "delete" plates come from. I've seen a lot of original paperwork where the radio is priced out on the dealer order form and invoice, but the radio is not on the window sticker. (my own '62 is an example). Apparently, the dealers could make more profit by installing it themselves rather than just getting the mark-up on the option cost.
Verne