I have just noticed for sale on Allegro the Virtuti Militari Legitymacja Nr: 928, which was awarded to Franciszek Edward Pfeiffer the photograph in the Legitymacja shows him as a Major with the VM (Silver Cross), KN, KW x 4, KZ etc.
You might say so what, nothing unusual about that, but wait Major Pfeiffer went on to be a General Brygady (only 3 months before he died in 1964) also awarded the Virtuti Militari Gold Cross.
There arn't many opportunities to purchase a future Generals award Legitymacja.
It can be found on Allegro in the Polish Medals section pre 1939 last item on the page.
I have also listed below a brief outline of his career:
Born in Lodz 21st Jan 1895
Kpt - 1st June 1919
Mjr - 1st January 1928
Pplk - 1st Jan 1936
Plk - 27th August 1944
Gen.Bryg. 19th March 1964
Died in London 13th June 1964.
The link for the we page is: VIRTUTI MILITARI - legitymacja nr. 928 , UNIKAT (2699016813) - Allegro.pl - Wi
Best of Luck
To buy this once in a lifetime item, it will cost you £455.32p plus postage.