What model of Lister is this, and where might I find a serial number?

[You must be registered and logged in to see this image.]

This Lister engine is tucked away in a corner of the Gas Engine house at Portsmouth's Beam Engine museum. Somebody has given it a coat of green paint, but otherwise I think it is 'as received' probably in the 1970s. It is seized, and lacks a carburettor and fuel tank, not to mention spark plug and drain taps. Fortunately it doesn't seem to have been frosted, but the cylinder head nuts and studs in the cooling hopper are seriously rusted.

I have been unable to find any indication of model or serial number.

Thanks in advance,
George

You could also try:

[You must be registered and logged in to see this link.]

Thanks Paul. I've had a look but it's not in the pictures, and until I can identify the model or find a serial number the lists of dates don't help.

George