Fewest Penalties in an FOF Game?

[Fonzie]

In a solo career I'm playing I just saw what I think is an all-time low for this career: a game in which there was just one penalty called for 5 yards between both teams.

I cannot recall ever seeing an FOF game with no penalties. Has anyone seen such a thing? Or has there ever been such a thing in the NFL?

[Darkiller]

can't remember seing such a game in any of my solo career.