Early Doll Engine

A recent ebay purchase, this engine was advertised by the seller as a Wilesco, which i was fairly certain it wasn't.
I think it is mainly an early Doll engine probably from around the late 1930s. I say mainly as the boiler is a replacement.
Doll boilers from that time had different fittings and usually a sight glass on the end of the boiler. This one clearly doesn't
fit properly and has a Mamod safety valve. There are some other changes, the handrail stanchions are not original and the
governor is missing.

So does it run? Well, yes it does, video here. However there is a lot of play in the piston
and the piston valve so the engine does not have a lot of power.

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