Welcome to my home town!
Couple of decent shops...the best and quite the treasure hunt is DJs Sportcards in Renton...decent amount of vintage, not much pre-war -
https://djssportscards.com/
Near Greenlake there is a shop on Aurora Ave (HWY 99) called The Card Exchange. Decent amount of vintage, owners are a little odd but I always find a deal or two, and it will be close to you -
https://cardexchangesports.com/
Also, there is a Twin Oaks show this weekend in Federal Way, both Saturday and Sunday -
May 20th & 21st
The Commons at Federal Way
TWO GREAT SHOW DAYS
1928 S Commons, Federal Way, WA 98003
Saturday 10AM-4PM
Sunday 11AM-4PM