Hi,
It looks like your information is a combination of three different D&RG locomotives. I think you are correct with D&RG #150.
I hope this helps.
Doug vV
According to Locomotives of the Rio Grande by CRRM:
D&RG "Silverton" #150
class 45 mogul. 14x20 cylinders, 45" drivers, 26 ton, 9560# te.
Rebuilt 1/15/1885
2/1892 BB&K #10 for $2500
1904 Buffalo Bradford & Kane # 10
1905 Big Level & Kinzua # 10
1911 B&O
? West Virginia Midland
Quote
9 (2nd) 2-6-0 Baldwin 5643 5/1881 14x20" 45" Orig. Denver & Rio Grande # 150 "Ruxton"
According to the same book:
D&RG "Huerfano" #9
Class 35, c/n 2728, blt 1871
1882 leased to Mather & Geist
1883 M&G purchased
Dismantled 1888
D&RG "Ruxton" #151
class 45 mogul. 14x20 cylinders, 45" drivers, 26 ton, 9560# te.
10/2-12/1883 leased to B&C Smalting
4/19/1902 dismantled Grand Junction.