Here's one. I would say it's a dealer or buyer installed item? We took it off the tan '66, cleaned, polished, silver rattle can paint and put it on the restored '64. The bumper looks really good where the tag was.

Before and after.
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Father and son built. Driven daily since 2012. 283, 3 speed. Mostly original. '81 PS and disk front. Fuel tank relocate.
Maintenance, repairs and upgrades on his dime now.
http://zacks64longfleet.shutterfly.com/
Higher res. photos in my gallery.