mexican necklace need help trying to find maker and date

[stephballard78]

hi my name is steph i have a few mexican pieces and this is one that i am having trouble with trying to find info on it .the stamp on the clasp is
TM-188
MEXICO
925
i hope some one knows the maker and is able to help me i dont know how to import photos on here but i do have one if needed.

[dognose]

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