I have posted pieces in the King’s Crown pattern in the past. I have always, or generally, thought of the pieces as having been produced by Indiana Glass. However I knew that a number of companies made this pattern with slight variations.
The variations include the shape; the number of seams, the number of thumbprints and of course the colours.
As far as I can figure, these pieces were made under the names of U.S. Glass/Tiffin, L.G. Wright, Lancaster and Indiana. There are likely other companies.
I came across a great Facebook site – Kings Crown “Thumbprint” Pattern Glass. There is a wealth of information here including a downloadable reference guide.
From this guide, and an accompanying website – Kings Crown Glass (make sure to check it out) – I have tentatively identified the glass in the first photo on the left as having been made by US Glass. The stem on the right is shown very clearly in the reference guide as unidentified.
At first glance the stems look alike but the first has 9 thumbprints and three seams in the base. The second has 8 thumbprints and 4 seams. The thumbprints are a different shape, as are the glasses.
If anyone has more or more correct information I would be happy to receive it.