I found these 1950’s/160’s Cocktail glasses in an antique shop in Essex and the Salt at an exhibition of crafts in Clerkenwell, London. The glasses were ridiculously cheap and the salt was not expensive. The glasses are perfectly weighted, the stems are gilded glass, not a metal cone as I had thought when I first glanced them in a showcase. I have not identified the make yet, let me know if anyone recognises them. The salt it is mouth-blown glass intricately hand-engraved with plant forms by Katherine Coleman.
Sally Wakelin - Studies in Creativity 
Hello can I ask how you identified your item as Katharine Coleman please as I have a vase with an engraved tree and a signature that looks like “Coleman” so my googling brought me here! I can’t find an example of her signature online so wondering if your salt has one at all? Thanks so much!
Hello! I bought the salt from Katherine, she has a studio in Clerkenwell in London. I love her work. Follow this link for more info about her.
http://craftcentral.org.uk/katharine-coleman
I can look at my piece and send a photo later, unable to do it right now.
That would be wonderful thanks for your help!
Katherine signed my piece alongside one of the stems, using a fine engraving tool. K. Coleman 2012.see photo above