I found this on an earlier thread post on this sight.
HRWs pickups, Ultra Curly Top and Gold Hardware seem to be the differences. Yours ticks all the boxes.
H-150CM Ultra Specs:
Neck - 17 degree peghead pitch; one piece mahogany neck.
Fingerboard - 24 3/4” scale rosewood cream bound fingerboard with 22 frets, with mother of pearl trapezoid inlays.
Body - Single cutaway solid body solid carved ultra curly maple top and solid mahogany back, cream bound.
body size:
rim thickness - 2”
body width - 13”
body length – 17 1/4”
Electronics - Two gold plated H.R.W. humbucking pickups; two volume and two tone controls with selector switch.
Hardware - Gold plated hardware.
Color shown -