Need help identifying a sub unit who would have worn this 1st Division insignia. Uniform appears to be an unmolested original. Collar disc is Infantry, Company B. I've been told in an older issue of ASMIC someone identified a similar example as being for a 1st Division driver working for the American Battle Monuments Commission. However, I do not feel that to be accurate for several reasons, namely as the ABMC isn't formed until 1923, four years after the 1ID rotated home. Any divisional involvement in the inter-war era would have been much later in the 1930s, long after use of this uniform.
I've seen other 1919 Occupation era 1ID patches that incorporate the "1" and the wreath, but not one with these horizontal bars. Any help is appreciated.