This isn't necessarily a Philadelphia recommendation, but there's lots of people on IG who restore and and resell MCM furniture, you DM them to buy, and you can get it delivered with a pretty reasonably priced delivery service. This is one in the North Jersey area that we've bought two dressers from, this is another example, and here's one that's actually in Philly. Just some examples, there's lots of accounts out there.

If you're cool with not seeing things in person before buying, it's a pretty good option for unique, high quality furniture.