What does MCY stand for?

Machinery (IAA)

Maroochydore - Australia - Airport symbol (OAG)

Mercury General - NYSE symbol (SAG)

Mercury, NV - Location identifier - FAA (FAAL)

Mount Calvery Resources Ltd. - Vancouver Stock Exchange symbol

Sea Glass Technology Inc., Bristol, RI - Manufacturer code for watercraft hull identification number (USCG)

South Watut - Language code (ETLW)