Adrodd fel Amhriodol
Testun Gwreiddiol (Anodiad: EPW006195 / 1149979)
'
I suspect that the tube stock would be the specially commissioned joint stock which, as the name suggests, was jointly owned by the Underground group and the LNWR.
It was delivered in 1920, but had a short service life because of reliability issues and was replaced in 1930 with standard stock. '