LNER articulated triplet restauant coach set
Introduced between 1924 and 1928, unde diagrams 12, 13 ans 14.Some small variations. Design appears to be based on later designs, using drawings in Historic Carriage Designs volume 1 .
Used in prestige trains such as the Flying Scotsman.
Requires chassis, bogies, wheels etc and finishing off
Scale O (1/43.5, 7mm/ft)
=====
more info about the LNER coaches here
https://en.wikipedia.org/wiki/Coaches_of_the_London_and_North_Eastern_Railway
more 3d printed models from Recreation21 here
https://www.rue-d-etropal.com/3D-printing/3d_printed_designs.htm
=======================================
------------------------------------