I’ll say legit.
About 10 years ago, a local TRU did a major remodel and in a spot where they were moving the shelving into a new configuration there was a pile of debris. Dirt, papers etc. and there were a few toys that looked like they had been found between or underneath the shelving and one of them was a vintage ESB Dengar. I asked to buy it but was shot down. It was in similar shape as this one.
Adam and Jamie say “ Plausible!”