You're getting good service out of that old SEPA #1 Jim.
Is that one a true original Solar Engines, a Thermal Energy engine or a PM Research engine? My guess is, just as you stated!
It is in reality a somewhat American-ized Davies Charlton Ltd. from the Isle of Man.
Made in Phoenix.
The Thermal Energy versions are marked Phoenix Az also.
You seem to relish lately being pedantic mate?
Maybe concentrate on posting up some stuff you do instead of relishing in catching others up?