Any idea why CME Currency contracts: 6A, 6B, 6C, 6E, 6J, 6S, M6A, M6B, M6E are all quoted in Dollars EXCEPT M6C, M6J and M6S (quoted in CAD, Yen and CHF)?
Guessing the intention was to adhere to the spot quoting standard - so that retail clients don't have to deal with inversed quotes like with their full contract counterparts.