This is an original WWII issue U. Type as packed into the Navy M-592 Parapad survival kit. Also used in many other survival applications. Tablet ration is the early post war version with 1949 date, as WWII rations were undated. Ration is in unopened condition. There is no surface rust and it is complete with the key. Measures 4″ x 2″ x 1. No dents or damage. Great ration to add to your M-592 or if you collect survival items this is for you. If there is a problem or concern contact me and I’ll make it right. Once feedback is received I will reciprocate.