Richmond Record Pressings, Inc.

Mercury American vinyl pressing and plating plant, operating under this name between October 1961 and 1966.

The former National Record Pressings, Inc.
In September 1961, National Record Pressings, Inc. (a wholly owned subsidiary of Mercury), was purchased by Consolidated Electronics Industries Corporation as part of the takeover of Mercury (Conelco became the North American Philips Corporation in 1968), which established business under two company names, Richmond Record Pressing and Wayne Printing.
Renamed to Mercury Record Manufacturing Company in 1966.
Later became PRC Recording Company, Richmond, IN, in 1972.

Vinyl pressings can be identified by an "RR" etched in the runout grooves. Vinyl issues in the Mercury Living Presence series, that have "RFR" etched in the runout area and that have a deep groove in the label area were also pressed there.

Note: "RR" in runouts can be found even after 1966, apparently when old material was reused.