batfish try a search here on Wyeth there are quite a few posts. I didn't see your bottle with a quick look but this thread had some info https://www.antique-bottles.net/forum/m_123/mpage_1/key_wyeth/anchor/tm.htm#123
Long story on this company and as Roger stated they renamed and renamed back. My book shows the same example as your post and states advertised 1870's.
John Wyeth born 1834 died 1907.
Amber 9"x ?
The bottle book by Fife