Hi,
I've seen this recent find described as a Boston & Sandwich U.S.A. 'Crown' pattern master salt circa 1840/50. I've also seen one with a reference to Barlow & Kaiser #1485 and a comparison to the 'Imperial Salt of Bakewell,Pears & Co. seen here:
http://opensalts.us/References/Catalogs/catalogs-USA.html (there's also an 'Imperial' version by McKee shown in 3 catalogues on the same website).
I'd really appreciate any information,views or opinions.
I'd just like to add a recommendation for the opensalts.us website. For those of you who have an interest in pressed glass it's an absolute must view imho.
Kind regards
Nick