I doubt you want to travel all the way to Philadelphia to check out used abandoned masts that probably didn't come from Hunter boats, but my yacht club's crane requires that folks who haul their boats for winter must take down the mast. When folks abandon their boats, and the club disposes of them, it's not easy to tell which mast in the rack belongs to the abandoned boat. About a year ago we set aside those masts which didn't have clear owner credentials and notified the membership to get, rerack and label their masts. After a season we still had a few unclaimed, which may still be on the property waiting to be scrapped. Check around your neighborhood, maybe even clubs and yards that don't demast when hauling out might have a few mismatched masts lying around.
Next time I'm at the club I'll look to see if we still have discarded masts in case you do want to travel to Philadelphia.