per Wikipedia: The distinctive unit insignia was originally approved on 22 May 1962. It was redesignated for the 14th Supply and Service Battalion on 24 November 1965.
This pin is marked on the back M.S. Meyer and has the number 9M. Per the Office of Heraldry letter / number code hallmarks, a single letter / single number code was used between the years of 1960 to 1965, so this pin should be from the Vietnam War era.
The pin is part of a large collection of insignia pins that I purchased at an estate sale. It is attached to a small thin cardboard square. Any writing on the cardboard was put there by the previous owner and that's great because I can't imagine how long it would take me to look up and obtain information on over 700 pins. I'm using his information. He was the expert, so hopefully the information is correct.
It measures 1 and 1/8th of an inch in the widest areas. It has the motto "Foundation For Victory". The back has a double clutch holder.
Buyer to pay USPS First Class Mail parcel delivery charges of $4.15. Shipping is from Nevada.
I do combine shipping on multiple items purchased. However, my web host is not set up to calculate multiple item shipping costs. At checkout, you will be charged full shipping price on each item purchased and I will refund the appropriate amount of over payment.