BE 0331 rear on Ebay

[69L72RS]

Unfortunately I can't toss out an opinion on that stamp because I don't have one to overlay the picture with and I haven't seen the rear in person.
I also do not have that date in my database as a valid assembly date.

The letters would need to be inspected with a loupe for verification or compared to a valid known stamp of the same date.

I was just pointing out that the carrier is able to be identified as a standard unit and not a COPO posi unit.

If it is a real housing with that date, it will be a prize for somebody even without the original r&p or carrier.