The problem is the piece of law you cited is referential to S128A. Once you go down the S128A/B rabbit hole, you'll never escape.....
"The provisions of section one hundred and twenty-eight shall not apply to any person who, without being licensed as provided in section one hundred and twenty-two, sells or transfers a firearm, rifle or shotgun to a person licensed under said section one hundred and twenty-two, or to a federally licensed firearms dealer or to a federal, state or local historical society, museum or institutional collection open to the public."
So the question is, does the reference to S128A effectively nullify the requirement in that circumstance? Particularly given that 129C references it explicitly.....
-Mike