Is this a Max Gray PRR E6s 4-4-2? No, it is Williams!

Can anyone provide a positive identification of this engine? I think it's a Max Gray import.

I expected it to have an open frame motor, but was surprised to see it has an enclosed gearbox and a can motor (large - almost diameter of boiler). There is a stamped back head with a few extra details. That suggests to me it might be a later version - anyone offer an approximate year of manufacture?

There is a bit of bending going on here and there. Nothing too major. The air compressor is twisted and detached from its piping. The left crosshead can been pushed forward. I've not yet applied power.

Thanks, Jim

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