Vintage Bronze Mexico MCM Modernist Mother & Child Signed Numbered Foundry Mark

Pre-owned.  From an estate.  The back of the piece has "Cast in Mexico", I believe.  There is also a foundry mark, a signature I cannot decipher, and a limited edition number 192/M. Not sure if the M refers to the number 1000, or not.  This piece measures about 3 5/8" x 3 3/4". Weighs 1 lb 13.6 oz.  Could use as a paperweight, I suppose or just display as a small piece of art. It is not dated but has that mid century modern vibe.