It looks like a fancel but I'm *positive* the boy-
type is from the "Bath House Battle, We're in 
Some Hot Water Now" episode. (he's embarressed 
Happosai is bringing a bucket of bath toys to the 
bath house)

Is girl-type Ranma on a seperate layer or painted 
on top of the boy-type Ranma? I once bought a cel 
someone...er...personalized...by painting another 
character in with the existing one. This could be 
the case with this cel.