When trying to identify Indian numbers on brass, all that is necessary is a chart to translate the numerals from Indian numerals into Arabic numerals (the historical name of our numerical system). An important distinction to understand is that a "numeral" is a single written digit, while a "number" is the quantity represented by the numerals. Indian numbers are written the same way as Arabic ones, left to right. Indian numbers use zero, as well.
Visit website (see References) to refer to chart.
Find any of the numerical symbols from the chart on the brass. They will all be from a single row.
Translate each Indian numeral into modern Arabic numerals (our numeral system), writing the modern Arabic numerals down one at a time in the order they appear, left to right.
Read the number you have written down. This is the translation of the Indian number.
If you are trying to determine the provenance or value of an antique, make sure you get an expert opinion.