67 rare convertible nos quarter panel

[Jonesy]

Here they are date codes

[Jonesy]

In original boxes dated May 1985

[67conv6cyl]

Here is the born with stamp that is on my 67 convertible

[Butternut1967]

My understanding is sometime around 05C the telephone receiver shape was changed to the different style. The stamping dies would wear out and as they were tooling for the 68 production changes, the indent shape did not matter. I know at one point Heartbeat City had the correct receiver shaped 67 convertible quarter panels. I bought a set. They fit perfect but pricey. I think they were produced from GM dies. Other than the HC quarter panels, all others I've seen have the new indent shape, even most NOS quarters, unless produced prior to around end of May 1967.

[Petes L48]

My understanding is sometime around 05C the telephone receiver shape was changed to the different style. The stamping dies would wear out and as they were tooling for the 68 production changes, the indent shape did not matter. I know at one point Heartbeat City had the correct receiver shaped 67 convertible quarter panels. I bought a set. They fit perfect but pricey. I think they were produced from GM dies. Other than the HC quarter panels, all others I've seen have the new indent shape, even most NOS quarters, unless produced prior to around end of May 1967.

There's a recent discussion on this over in the Originality section, where it appears the switch from second to third design came around 4C or 4D build week.  These NOS quarters the OP has are the second design.     

http://www.camaros.org/forum/index.php?topic=19792.0

[67conv6cyl]

According to NCRS build date of April 5 both sides this stamp