This is a fairly early (no USA) slant signature Otto Link with the large chamber.  It was stamped 5* with a bit of a thick tip finish,  I was inspired to open it to .063 with a traditional Link facing and a good rail contour.  This plays very big, and wide with a warm darker tone that also has a very fast and concise response. It has a unique singing quality that I think only these have.  I felt that this piece did well with intonation as well, for whatever reason.  It’s a very pretty sound.