These were built first in 1939 to a Stanier design developing a previous jackshaft design. They were numbered 12003 - 32 in 1951 and remained so in 1960. At this time they were classified as D3/7 in the E & NER. In the LMS period they were grouped with all the similar diesel/Electric shunters. Hope this helps as I have no modern data.
- posted
18 years ago