MAMark wording
c. 1934
MA
Boston MA, USA
Jewelers’ Building Boston
Designer marks
Boston MA, United States · 2 marks.
c. 1934
Boston MA, USA
Jewelers’ Building Boston

c. 1934
The source entry lists c.1934.
Boston MA, United States
M s p, m s p 10k, m s p 14k, msp