When I saw these recently I thought that I recognized the etch as one of the ‘poppy’ etches that I have seen.  As it turned out….this was an etch with which I was unfamiliar.

Replacements.com cites a production range of 1926-1931 and indicates that the line number is 348.   I gather that the pieces came in clear, pink and green as well.

The listings in the Replacements database appear to indicate that tableware was produced with this etch as opposed to stemware.

I do not have particularly great Tiffin references and all I can find online, for the most part, is this information.

Nice and bright.