Technically, these are “Post-Cal” and not postcards, though they can be mailed.  Here’s the story:  you do a treasure hunt all through Los Angeles until you find the L.A. County Coroner, a complex including a massive old building that has a quirky and quite engaging gift shop in one corner of the ground floor.  They sell these, which are peel-off stickers but which have a place for a stamp as any postcard would.  The message area is pre-printed.  You won’t find them at the neighborhood drugstore.  Unused, and just waiting for you.  Grades: 1