Here is one case I
might spring for a reproduction tag, expensive as they are, and keeping the orignal with the car; assuming you could get a reproduction with the plant information missing.
Living in Oklahoma with their trim tag law it'd also have to be stamped "REPLACEMENT TAG" but it might just be worth it to preserve the original.
If you can, be sure to check the firewall for any stampings like
8K123456 where
123456 is your sequence number. If the body comes off the frame, look along the top of the frame rail on the driver side after the axle kickup for a stamping there as well and see that they match the VIN plate on the dash and/or registration.
Still a unique color scheme car...I think I'd like it.