Vintage Wooden Mandolin Slicer

This is a vintage wooden mandolin slicer, a traditional kitchen tool used for slicing vegetables and other foods into uniform, thin slices. 
Construction & Features:
• Made from what appears to be beech or similar hardwood
• Features an adjustable metal blade that can be positioned at different angles
• Has a thumbscrew mechanism for adjusting slice thickness
• Includes a hand guard/pusher piece for safety
• Traditional wooden handle with hanging loop
• Shows nice patina and wear consistent with age and use
Condition:
• Appears to be in good vintage condition with expected wear
• The wood shows natural aging and patina
• Metal components appear functional, though they show some oxidation typical of age
• The adjustment mechanism seems intact
Likely Era: Mid-20th century (1940s-1960s), though these traditional designs were used for many decades