WOW!, BIGJIM71, That looks like a Ernest Holmes model 485. Can you find a Serial no. plate on the right side of the wrecker boom mast. The model 485 units were built from Jan. 1931, until June 1935, only 139 units built. There was a model 490 built from March 1934, until April 1949, but the 490's had webbed booms. I've owned 3 Holmes 515's, 2 Holmes 525's, 1 Heavy Duty Holmes W35, 1 Heavy Duty Holmes W45, & 4 Holmes 600's.
