937011 LMS Dia.1666 Open 5 Plank - No.M234421 - BR GreyThe LMS inherited some 305,000 good vehicles from its constituent companies. However, many of these needed replacing and the LMS embarked on a huge wagon building program. It looked to a Midland Railway design as its standard open wagon. The first batch of 1,000 wagons was built by the LMS in 1923. A staggering total of 54,450 wagons were built to this design designated Diagram 1666 by the LMS up to 1930. There were more Dia. 1666s built than the