mso489,
Unintentionally buying a stolen pipe off of ebay has been a possibility that crossed my mind. One pipe I bought actually had a signature engraved on the shank. I knew where it was being shipped from so I googled some records using the name and found good evidence that the pipe came from an estate. More recently on another pipe I asked the seller who the pipe belonged to before him. He let me know the gentleman's name and other background information.
If I were bidding on more expensive pipes I'd be more concerned. Something to keep in mind though.
Unintentionally buying a stolen pipe off of ebay has been a possibility that crossed my mind. One pipe I bought actually had a signature engraved on the shank. I knew where it was being shipped from so I googled some records using the name and found good evidence that the pipe came from an estate. More recently on another pipe I asked the seller who the pipe belonged to before him. He let me know the gentleman's name and other background information.
If I were bidding on more expensive pipes I'd be more concerned. Something to keep in mind though.