My brother's Purple Heart has no number but has his name and the words "For Military Merit."He was killed in WWII. I'm sure his widow received a medal at that time.This one I requested and received it last year after waiting one year.
The web site, Military Order of the Purple Heart, may be able to help those with questions. If they don't have the answers they can probably refer you on to someone who does.
WE MUST NEVER FORGET