Could very well have been a case of "She's a pin, pairing was chocolate x pinstripe, she's darker than the others, but I can't really tell for sure...so she might be a chocopin? I dunno, I'll sell as a pin"
Rather than the whole het thing. There are tons of people that sell morphs that are possible for a incomplete dominant, especially newbies who don't know how to tell the difference very well. Pin vs chocolate pin seems like a hard one to swallow for not being able to tell, but who knows! Maybe the pin was super dark or somethingMore often you see "Possible yellow belly" or other more subtle morphs.
I like ramblez