Check the listing for details. Vintage! Pratt & Whitney Aircraft 1955-56 Calendar. Condition: Used. Listed at 75.00 USD. The "Vintage! Pratt & Whitney Aircraft 1955-56 Calendar" is a collectible item featuring images and information related to aircraft manufactured by Pratt & Whitney in the year 1955-56. This calendar serves as a unique piece of aviation history, showcasing the technology and design of aircraft from that era. Aviation enthusiasts, collectors, and those with an interest in transportation history may find this calendar to be a valuable and nostalgic addition to their collection.