Though not depicted in Victor Gadoury's early-1990's publication (No 48, description); where I first read of the series, and later saw an actual example of the "1000" in Dale Seymour's work... I at that point hoped to one day have one of the 1000f and 500f plaques [I missed the Potter 2017 auction where one became available]... and recently the 1000f surfaced; No 48, as seen listed. I was lucky after all these years.
Now all I need to do is find the 5000F... 😀