My '69 GTX with a December 16, 1968 Scheduled Production Date (SPD) is the Y2 yellow first photo with black original door buttons.
The second '69 GTX has a SPD of A 14 / October 14, 1968 also with black door buttons.
The third '69 GTX has a SPD of 128/January 28, 1969 and it has chrome door buttons.
The 4th is a '69 Hemi Super Bee with a SPD of 102 / January 02, 1969 and still with black door buttons. And this Hemi Bee was used only as a drag car almost its entire life and at the time I took this photo it has less than 9,000 miles on the odometer so I'm guessing the door buttons were still original.
Mid to late January '69 SPD, IMO should be chrome door buttons. But(ton) it's no big deal unless.................