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What are the dimensions?
Can you post more pics so we can see the entire object?
What is the back story? How did you get it?
Don...
I think you have an old rum bottle, but it’s no earlier than 1954.
In 1855 a Scotsman named Edward Abraham Dyer set up a brewery in Kasauli in India to supply British troops stationed there with cheap beer. Later the company changed hands and became a distillery called Meakin Pvt. Ltd. If the bottle you have has an 1855 date then that’s the establishment date for the company, not necessarily the date for the bottle or its contents.
If the bottle also says “Old Monk” then that’s what tells us it’s a rum bottle and gives us the actual date. In 1954, the company began making an aromatic rum from Indian sugar cane under the “Old Monk” brand and it became India’s most popular spirit drink. It’s still made today in Ghaziabad.
The bottles have traditionally had a ‘crazed’ pattern moulded into the glass, like this:
Today’s bottles are clear, but if yours is coloured glass it’s probably from the early period, but still no earlier than 1954.
Finally... a proper picture! Yes, that's definitely an Old Monk Indian rum bottle and not earlier than 1954. Not rare unfortunately... it was a huge-selling product in its day, although now in decline.