I'm gonna go against popular opinion and call this legit, I've come across a cart like this before made from a whole AOF3. The P1, V1, C1 and C2 ROMs look to be mask ROMs, the print on them is similarly inconsistent with the common Power Spikes II version of Puzzle Bobble, which has an NGH number of D96, it's supposed to be 083.
Considering the Puzzle Bobbles we think are legit are made out of Power Spikes II, I don't think it's crazy that SNK would have sacrificed other games to cheaply fill the Puzzle Bobble demand.
That SNK-9201 chip isn't being used by Puzzle Bobble, you could salvage that chip, it's really just a PRO-CT0.