Vintage "Horace" Martin Buescher Stencil LP Low Pitch Alto Saxophone - 55644Notes Serial Number: 55644 Based on research in the forums we believe this to be a Martin or Buescher stencil. The serial has LP under it. We're assuming that stands for Low Pitch. Another site says Conn used the name Horace as well. If you have any insight we'd appreciate it! We acquired this from a shop on Long Island that was open for 50 years and I believe they acquired it from an older shop. We are not saxophone experts. A Vintage "Horace" Martin