Vintage WW II USN NAVY Cold Weather Deck Cap Hat Liner -Size 7 1/2

Great USN cold weather deck cap in good shape! “USN” is very faint on neck which also has “MEF 6” printed which may be a personal identification or unit assignment (unknown what they stand for). Inside tag lists the size (7 1/2) and contact number. You can also see faintly “J. BIRCH”. This is a cool collectors piece for WW II collectors.