... ashtrays advertising, and presumably made by, Pyrex? ...
Marcus — Is this a trick question? Pyrex is a type of glass, not the name of a glassworks!
If you meant "... ashtrays advertising, and presumably made in, Pyrex? ...", then I think it unlikely. I've never seen one, nor come across oven-to-table, casserolled, baked, or roasted cigarettes, with or without gravy or custard. Why use an expensive engineered heat resistant glass when cheap flint glass would do? Re British Empire (minus Canada?) Pyrex, Jobling's mid thirties trade catalogues advertise a variety of flint glass ashtrays, round or hexagonal, plain or with moulded horse's head or cockerel, uncoloured or amber. By Adam's time, they had stopped making anything but Pyrex, so promotional glass ashtrays would probably have been commissioned from the likes of Nazeing or Wood Bros.
Bernard C.
