Hi tinplate fans...my input today is really limited since I am traveling (yes by air) dual masked, sitting as far away from anyone that I can, etc...However, I noted Fatman's picture of his original purchase of Hornby M0 clockwork trains. So as a quick add to what he posted, here is my M0 loco. Its of the original 1930 vintage, no cylinders or drive rods and the number 6100 on the tender. This is the red livery, but it came in green as well. Cylinders and rods were a later addition.
Here is the loco and the 6100 tender
Here are the coaches, two in this set. "JOAN and ZENA". These are also in their 1930 (first) configuration.
Fatman, interestingly enough, this set was my first Hornby acquisition as a train set. I had 2-3 cars but no loco's and no track etc. So we share that in common.
Don