This is an early version but mixed. The slide is a single-hole version with flat knob housing, from an early Radio King drum, 1937/38 or so. Lever arm extension is not stamped. A Slingerland 3-point strainer from the 1930s.
Slingerland 967 3-Point Snare Drum Strainer Throw Off Part 1930s Vtg Nickel Rare would be a great fit for professional drummers looking to upgrade their snare drum equipment, offering a high-quality, vintage-style strainer with a rare casting number.
