Obverse Design Crudely made. Per Hamlin, the planchet appears to have been flattened with a hammer and the letters set in with single punches. The top line has an "A" (which possibly stands for "American citizen"). The next line has "138" (the employee number). The bottom line has "I.C.C.". Reverse Design Blank. Metal Brass Size and Shape Round, approximately 46 mm in diameter (about 46.5 mm high and 46.1 mm wide). There is one small round hole on at the top. Dates Issued Unknown. Being so crudely made, this was probably a pattern instead of a regular issue. This may have been a pattern for the ICC Round checks which started being issued in January, 1909 (with no A's). Issurer I.C.C. stands for Isthmian Canal Commission, which was the part of the U.S. government responsible for building the canal. Numbers Issued Only known piece is #138. Rarity Possibly unique. Manufacturer Probably locally made. Source Hamlin's ICC-10, Rulau's CZ 69, Asociación Numismático's ID-7. Varieties There is a another check of the same size which is somewhat similar. However, it has I.C.C. on the top line instead of the bottom, and says "S.A." instead of "A". Function This was probably a pattern of an employee id check for the Isthmian Canal Commission (ICC). Population Count Known specimens are as follows: Check #138 - shown above, courtesy of Robert Karrer.