Vintage Football - Any Guesses?

[otismalibu]

Trying to find out some info for someone that has this jersey. These are the only pics I have. No name on back. No info on wear or repairs.
Looked at BTPH's tagging info on his website. Is this a 1950s MacGregor tag?

Thanks.

[both-teams-played-hard]

Black tag with Cincinnati in red. Yes, mid 50s. Very nice durene, could be a number of teams.

[otismalibu]

I guess there are some repairs and also the number 7665 on white material on what looks to be the inside of the jersey, where it buttons.

Thanks.