well it sounds like ram455 has the only `70 with the "ribbed' ashtrays, all the 70`s I have (7, 3 convert. 4 hardt.) have the non ribbed and all are original, and of course the convert. ones have the larger non-ribbed trays.The 69`s I have (3) have ribbed.The 71 -72`s (I have 4 of those) have the smaller ashtrays even on the convertibles. is it possible that the "nos" one you have is for a 69?????? and can it be that all the 70`s I have are non original???