Built for $90,000 by the Lima Locomotive Works, #1223 is a Berkshire type (2-8-4) locomotive delivered to the Pere Marquette in 1941. It hauled heavy wartime traffic, including the PM's premiere expedited freights, #40 and #41. Its weight, however, restricted it and all the other PM Berkshires to the lines from Toledo, OH, to Saginaw, MI, Detroit to Grand Rapids, MI, and Grand Rapids to Chicago, IL.
The engine weighs 442,500 lbs, 277,600 lbs on its 69” drivers, with a 42’ engine wheelbase and 18’ 2” driver wheelbase. It has Baker valve gear and 26” x 34” cylinders. With a 90.3 sq ft grate and 466 sq ft firebox, the total heating surface is 6,709 sq ft, including 1,932 sq ft superheating. Operating at a boiler pressure of 245 psi, it delivered 69,368 lbs tractive effort. The tender weighs 284,800 lbs light and has a capacity of 22,000 gallons of water and 22 tons of coal.
When the Pere Marquette was absorbed by the Chesapeake
& Ohio Railway in 1947, #1223 was assigned C&O number #2657 but never bore the new number as it had not been
paid off at the time and the merger agreement stipulated
that equipment still under trust remained in Pere Marquette livery.