Rarest item you own in your collection

[Woldw1woldwa2]

Just post to rarest item in your collection and talk about them

[Scarecrow]

Here is an item in my collection.  The cap and tunic belonged to Hugh Card Brown. A Canadian by birth he and his parents emigrated to the US in 1926 when he was 7 years old.  Brown joined the RAF in December 1941 as a Pilot Officer, and was posted to 133 Eagle Squadron.  On March 16, 1942, somewhere over the English Channel, he was posted MIA.  (age 22)  He and his aircraft were never located.