A slope-back tender was usually the 6403B such as this one

Model Number: 49990924

The Trainz SKU for this item is P11425319

9 cm) Code 60 Flex Track

and mixed couplers

Lionel 6-82183 O Gauge Union Pacific 2-8-0 Steam Locomotive & Tender #618 ProductID_12380700 A slope-back tender was usuallyThis is a Lionel 6 82183 O Gauge Union Pacific 2 8 0 Steam Locomotive & Tender #618. From the 1880s to the 1910s, the Consolidation was the workhorse of American railroads. Railroads built more examples of this wheel arrangement than any other. Hundreds of examples in all shapes and sizes survived into the 1950s. Some of these reliable machines remain active today on excursion railroads across the country. Features: Legacy Control System equipped able