Never say never... Typically, a 1950 awarding would be in the 3M range.
According to my serial number data base, a probable explanation is this piece was among a bloc of awards originally issued to the Coastal Army, then returned after the war to a central authority after being unawarded during the war, to be finally awarded in 1950.
Another less likely possibility is the medal was actually issued during the war, but the booklet was issued in 1950, either in exchange for a temporary, field-issued certificate or as a duplicate booklet for one lost earlier.
That's pretty interesting. Is there any way to know for sure what happened?
"patina imparts character" - PJS
A wise man said: 'you should not pay a premium for what you want beyond your comfort level, and always ensure there is a mutually agreeable return policy.'