The numbers 22 50 3A stamped inside this Swiss military wool coat break down into the exact year of production, the standardized European chest size, and the specific body shape/height index:
1. Production Year: 22
2. Base Size: 50
3. Body Type & Height Profile: 3A
The Swiss military utilized a highly structured combination of numbers and letters to ensure uniforms fit soldiers of varying heights and builds without custom tailoring.
Summary of Your Coat
Your coat is a 1922 production piece made to fit a tall, regular-built soldier with a medium-to-large chest size.

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