Auto tranny number stamping?

I cleaned off the stamping on the left side of my 727 above the oil pan on my 67 barracuda 273 commando car.
The number stamping are clear but seem a bit strange to me compared to B and E body automatic numbers that I’ve seen over the years.

I thought I would throw the stamped numbers up to see if any of you A body gurus can decipher anything from it?

2801536Y 2479462
Author: Fireguyfire