Well, it looks like you're really right.
I found other examples of these bottles made by Henry Manton on the internet.
![Image](https://i.postimg.cc/tsNKTVk5/zzzzzzzzz230933.jpg)
I would never have recognized the Birmingham anchor.
Also in the 925-1000 photos the Henry Manton mark has a big dot between the H and M, which isn't here.
Congratulations
And many thanks of course
Amena