1960 I’ve blown it and sucked it😀and the needle moves freely ,Glass is good and the case is slightly dinted /Creased …it will straighten.I have taken the back off for photos I’m selling as used/you know what I mean…Steampunk nice item ..But hey ho you get what you see …Cant see A manufacturer …but to me it’s all about the date …5 Aug 1960 Great birthday present for Dad /Or mum if there a piston /Steam nut …train etc