1999 Playoff Contenders SSD Football Forum

I got these two cards yesterday that are supposed to be 1999 Playoff Contenders SSD Football Power Blue. But they are weird. neither of them have the silver foil serial number in the same font as the normal ones, and in fact, these two cards don't even have the same font as each other.
Additionally, the Jay Fiedler has "Playoff 1999 Signature" embossed stamp on the front but the Jason Tucker doesn't seem to have one.

Anybody have any insight? These don't even seem like popular enough players to make it worthwhile to fake these.

According to Beckett, many of the Rookie AU cards, #146-185 missed the SN step. Looks like someone might have possibly tried to add SNs. The Tucker card even looks like it got stamped but the foil had run out and someone tried to "ink it in"?

Seems to be a few other cards which match the font of Jason Tucker based on COMC listings:
Patrick Jeffers
Ray Lucas

And one that somewhat matches Jay Fiedler but without leading zeroes (0):
Kevin Daft

Based on such listings, they do not have the same "blue" shine compared to others.

I do know there are some without serial numbers.