Tip O'Neill's Ashtray ... Maybe

A few years ago, I picked up this House of Representatives ashtray at a flea market. It was only sort of interesting. The person told me it was from the desk of Tip O'Neill, which makes it a lot more interesting. I actually found a photo of him at his desk with a similar ashtray on it. It sold for $46 bucks on eBay. A good story, but not much more than that without any provenance.