It was a few years before I began actively collecting, but the Philadelphia club had a dazzling blowout in with the very knowledgeable head went to prison for embezzlement related issues- possibly/partially funneled into Japanese swords and fittings. If a veteran collector want to correct my hash of history, they are most welcome to and I will gladly edit. My Jersey City neighbor, friend, and Nihonto mentor John Prough had been required to testify in Phili at the time.
Since then, a Philadelphia club had never formed. It is a shame, as they produced some good reference publications.
When we lived near the South Street bridge, I would just do as Robert suggested and commute from Phili up to the NYC club meetings.
Sometimes the meetings are just so-so. Other times, they can be incredibly educational- as some of the NJ-NY-CT crowd bring in very exceptional items and impromptu lecture from time to time. It is sort of pot-luck.