You are bidding on two 1974 Kennedy half dollars. One is hollow, re-closable, and is capable of concealing small thin items such as paper. The hollow coin will not open in normal handling and is virtually identical to a standard coin, which is also included. The set comes with opening device and instructions.

The coin, a reproduction of those that were used in the work as concealment devices is considered a scarce collector's item.

In a similar concealment, U-2 pilot Francis Gary Powers carried one of these coins.