Following information is from Volume 7 of the Grandt series on OA-OZ. I did the research and wrote the text. The book is out of print and hard to find.
Builder
D&RG, Burnham Shops
Date Built
January 1886
Construction Cost
$804.66
Original Number
Flanger 5
Automatic Couplers Applied
1903
Renumbered to OG
1907
1st Rebuild
September 1913 (Salida)
I.C.C. Inventory
June 30, 1920 (Salida)
D&RGW Lettering Applied
October 8, 1921 (Salida)
Rebuilt With Steel Frame
September 1940 (Alamosa, AFE T7851)
Normally Assigned To
Sargents (for use on Marshall Pass and Gunnison area) until 1955 when moved to Alamosa
Retired
September 1970 (AFE 7575)
Disposition
Donated to LaJara, Colorado for display in city park, 1970
Few more photos of OG at LaJara