Here's reviving a old thread. I have been researching this color as my car has it, I think. It is paint code 99 99. It has a build date of Nov 21 which I believe is in 1968 making it a fairly early car and certainly not in the spring where I live! This is the only pic I have access to right now but the sequence number under the bolt is 123417. This would make me think sp stood for special not spring. But I'm still learning about it. I am trying to add a link to photobucket but I'm not very good at this stuff!

<a href="http://s996.photobucket.com/user/Fittythree/media/Mobile%20Uploads/image_zpsu7lichco.jpeg.html" target="_blank"><img src="http://i996.photobucket.com/albums/af89/Fittythree/Mobile%20Uploads/image_zpsu7lichco.jpeg" border="0" alt="69 RR fender tag photo image_zpsu7lichco.jpeg"/></a>

http://i996.photobucket.com/albums/af89/Fittythree/Mobile%20Uploads/image_zpsu7lichco.jpeg

Last edited by gdrill; 03/31/16 12:16 AM.
Two things I know for sure: 1 - I don't know everything, 2 - Nobody else does either!