I just bought this, wrongly described as a 'candle snuffer'.
It is hand-made of nickel-plated copper and brass (the sole and heel are not plated and soldered on, but there is brazing to the top), is hollow - including the downward curving tube - and the boot is about two inches high. It looks to be Victorian in age, but could be Edwardian, and I don't know the country of origin.
My intial thoughts were that it it could have been some sort of pipe - possibly for blowing bubbles - but the downward curving tube and the folded-in rim to the top of the boot rule this out.
What the hell is it???
Maybe I should have included this close-up of the bowl-rim beforehand, because it has a vital clue about the object's potential purpose.
This top section is a thinnish pice of cone-shaped metal which has been brazed onto the rest of it and roughly finished, as you can see by the marks. The hole is acentric to the rim.
There are three quite important features about this boot thing: The cone tapers inwards, and the 'pipe stem' flares outwards as it gets further away from the boot, and it bends downwards, not upwards. I believe things were inserted into both apertures as a push-fit.
I am beginning to get an inkling by a process of considering its limited possibilities, but I will not put any ideas into your heads for fear of influencing the jury.