T3 or Power Beams 7" Headlights on Late 69 Car

[NorCam]

Just wondering what headlamps came out on a very late 10E car built Nov of 69. Would they still be T3 bulbs or would those have been built using Power Beam bulbs like the 70 cars?

Curious if T3's were still in use late in the model year and what other late cars are known to have had?

Thanks in advance.