I have recently acquired an Acme Master tenor and have been searching, without success, for some answers. I'd like to know if this is a Malerne stencil. I've read a few posts regarding Malernes and this sax has at least some of the earmarks, i.e. serial number (5XXX) running vertically along back. However, it does not have the characteristic elongated C spatula or the extra long rod attached with six posts. Does anyone have an idea who made this sax or when it was made? I have to tell you that it is a remarkable instrument. Bold, solid, free-blowing -- has the feel of a Beaugnier but with more guts. It has light action, simple key work, and reaches crystal clear altissimo more easily than any sax I've ever played. If you need more pics just let me know.