Stamp Stores In The 925/ SF Bay Area

Have been away for a while for health reasons. Always told my wife when it came time to sell could bring it to the Stamp Gallery in walnut creek. So decided today was the day to call and it looks like they are no longer in business. Can anyone confirm this; was there a lot when Spence was there. Have been collecting for 60 years and have a room full. Are there any other stores in the area? I've bought on ebay but never sold. I know several of you do, so any advice to give? I have had many years of enjoyable collecting, but no one in the family is interested. Tried to give some to the boy scouts, at first said yes, then no. Anyway, not dead yet so will keep enjoying.
Best to all,
pat