Lionel Post War 736 Berkshire and 2046W Whistling Tender File:The Lorax.jpg Wikipedia, the free encyclopedia. Product Title: Lionel Post War 736 Berkshire and 2046W Whistling Tender Manufacturer: Lionel Gauge: O Condition: C 7 Operational Status: This item is fully functional. Issues: One nut on the wheel is not original. Tender is missing a step and rod. TCA Condition Grading Standards: C 7: Excellent All original and may have minute scratches and paint nicks; no rust, no missing parts, and no distortion of components. TCA Box Grading Standards: No Box List Price: $ 475. 00 Traintiques SKU TQB 736 28 More Information: LIONEL TRAINS 736 LOCOMOTIVE The Lionel Lines Berkshire Type 2 8 4 Locomotive No. 736 replaced the No. 726 in 1950 and would continue to be available until 1968. This was the longest production of any Lionel locomotive during the Post War period. This locomotive came with Magnetraction which was the most significant alteration from the previously issued No. 726. Also gone were the Baldwin disc zinc rimmed driving wheels. There were a number of other distinct changes that occurred over the production period of this locomotive.