Probably better known for their range of small model aircraft engines, this UK company based on the Isle of Man also made a Stirling engine from, I believe, the late 1950's, I don't know when production ceased.
This one I bought as a cheap restoration project, it came to me full seized and showing some years of neglect, plus a grim looking flywheel which the Mazac worm had clearly been munching on:
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A few weeks on and:
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