The piece is in very good condition for its age. It is quite hard to find these life vests without it being deteriorated. Most of the writing is visible including the date, although it is hard to read. Both of the CO2 cartridges are still intacted.
Look at the images to judge the condition for yourself. The item "1944 Dated US Army Air Force USAAF Type B4 WW2 Pilot's Life Preserver" is in sale since Thursday, October 22, 2020. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment".
The seller is "ellendorf911" and is located in Lansing, Illinois. This item can be shipped to United States.