There are two operational K27
#463 on the Cumbers and Toltec and #464 on the Huckleberry
There are 3 C-19s running
#41 and #340 at Knotts Berry Farm and #346 at the Colorado RR Museum
And one C-18
#315 normally in Silverton but currently running at the C&TS
Most of these ran at one time on the line from Durango to SIlverton. Today the railroad runs K-36s ,K28s and soon a K-37 locomotive.
The #315 does run from time to time on the Durango and Silverton.