This little bottle dates from the age of the Primus stove. A Primus, and many other similar types of stove, burned paraffin which needed to be very hot before it would vapourise and burn effectively. The best way to get it started was to use a little methylated spirit (meths) which would be poured into the specially designed bowl on the stove. Once lit it would warm the paraffin in the rising or vapourising tube and the stove would roar into life! So this is a wee meths bottle probably from the 1950’s.