Kokomo Opalescent Glass Company, Inc.
Kokomo, Indiana 1888-Still operating as of 2009
Marbles produced from 1939-1942
I don't know of any manufacture or collector names for Kokomo's.  According to the AMMM book Kokomo produced Opaque Black, Patched & Ribboned, Patched Opaque's, Patched Transparents, Ribboned Opaque's, Ribboned Translucents, Ribboned Transparents and Transparents.