Can't tell you the class, but it would be a good car to model

July 1904 ORER page 160
series 65000 - 68499
inside 33 5 1/4; 8 3 1/4; 6 9
outside 34 ; 9 8; 11 5
doors 5; 6 1 3/4, end 2; 9 3/4
1857 cu ft, 60000 cpy 3373 cars in series.
This is the largest series listed, only one other makes it to 4 digits.

Howard Garner