Value a mixed collection of bullion and investment-oriented gold coins without forcing every coin into the same weight, purity or market-price assumption.
Every coin type is converted into fine-gold grams before the portfolio is aggregated. Where a specific market price is entered, that figure is used for that holding; otherwise the calculator uses the gold spot price as the metal benchmark.
A portfolio can contain different coin sizes and fineness levels, and some coins can trade above their metal value. Treating everything as one average can hide where the portfolio's value actually comes from.
This tool is designed around measurable metal and entered market prices. Rare or numismatic value should be assessed separately because it may not be proportional to fine-gold content.
Yes. Each holding has its own purity field.
Yes. Enter a price for that row. If it is left blank, the metal benchmark is used.
Only when those premiums are reflected in the entered market price.