Second pattern black butterdish marked amh/S

Textbook second pattern black butterdish or Fettbuchse marked with a 3 letter code which is rare to encounter on bakelite items. The butterdish is marked amh/S which indicates production by Hans Buellman-Werke, Gablonz / Schlag, Sudetenga. Typical second pattern with the fine thread and gripped bottom.