Serial numbers for the H-D series generally follow High Standard's chronological sequence from the late 1930s through the early 1950s. Approx. Serial Range Notable Versions 1942–1943 Early wartime production 114,000 – 117,000 1943–1945 H-D M/S (Military-Silent) : OSS suppressed variants 120,000 – 150,000 1945–1946 Late-war and transitional H-D Military models 150,000 – 325,000 1946–1950 Peak post-war commercial H-D Military production

Histandard Model Hd Military Serial Numbers Best

Serial numbers for the H-D series generally follow High Standard's chronological sequence from the late 1930s through the early 1950s. Approx. Serial Range Notable Versions 1942–1943 Early wartime production 114,000 – 117,000 1943–1945 H-D M/S (Military-Silent) : OSS suppressed variants 120,000 – 150,000 1945–1946 Late-war and transitional H-D Military models 150,000 – 325,000 1946–1950 Peak post-war commercial H-D Military production