Franklin Mint Great Airplanes Sterling Silver Ingot Collection in the Original Presentation Case with Information Booklet and Certificate of Authenticity.. This Franklin Mint collection is complete and showcases 50 silver miniature ingots depicting the Wright Brothers first flight through the Supersonic Concorde. The booklet traces the astounding progress of flight during that time period of 75 years with different flights and airplanes displays on the ingots. This set was first produced in 1978. Each ingot measures approx. 16.6mm by 11.13mm and 1.26mm in thickness with the entire set weighing 100 grams of .925 Sterling Silver. The presentation case interior is with blue felt and a satin inside top and is in great condition. Item will be packed securely and send via track and signed for.