sorry to take so long getting back - had to look up the source of my comment - didnt want to be making it without backup , and i didnt want ya-all thinking i made it up , while not ever saying 'always or never' when it comes to anything enfield or commonwealth in general im comfortable with this ,
im siting data from a reference book - "british and commonwealth bayonets" by skennerton and richardson , p215 ,
singer manufacturing co , produced the no4 mkI , clydebank , scotland , marked SMC , SM then N67 on their mkII bayonets ,
my mkI is a singer marked 'SMC' , my mkII is a savage