This hardhat, sporting a Ghostbusters decal, has turned up on eBay. The seller says the item was given to them by an ex-Columbia employee, but even they aren’t sure what it was used for. The initial conclusion is that the item is set equipment, only, the item is apparently artificially distressed – this would suggest then that the item might have been a prop… only, no hard hats appear anyplace obvious in the first film (the second film has hard hats, but they don’t have any logos.)
There’s nothing obvious to suggest the seller’s story is false, but it’s hard to gauge the authenticity of the item (and it’s worth.) If you’re reading this before 11AM East coast time, you might still have time to jump into the final bidding.