transmission ID

I've got a big block 727 trans and I wondered if anyone could tell me what the original application for it was. The numbers I've managed to find on the case are as follows:
753-4 in large numbers on the drivers side of the bellhousing area
2892758-4 upside down on drivers side of trans
2892088L236702483 stamped on the drivers side pan rail
9R297737 on passenger side of bellhousing
2466901 and 5A on passenger side of tailhousing

thanks