RM in monogram, pellet belowMark wording
Undated
RM in monogram, pellet below
Seen on objects dated 1684 (free 1671).
silver
Mark is " " and is attributed as "probably Richard Marchant" by Mitchell Mitchell, David M. - Silversmiths in Elizabethan and Stuart London: their lives and their marks, Boydell Press, 2017