First, apologies for parking this here. If there's a more appropriate section I was unable to find it. Mods feel free to put it where it belongs. Not sure where this came from. Inside there's a vacuum chamber and a lever that pulls a tiny chain that turns the hand. Nicely made inside (I should have taken a pic but was more concerned with getting the thing to work). Turns out the mounting screw on the back was putting pressure on the chamber. The housing is brass, the dial aluminum with embossed numerals. The guts are either gold-plated or highly polished. Leaning towards plated as the adjustment screw shows some corrosion which would have made its way inside, as corrosion does. The crystal is glass, not plastic. I have a feeling it's about 50 years old. Wilkie barometers are unknown to Google. It is possibly English. Anyone here have a clue?