1970 20 Paise Coin Value

The catalogue records 5 catalogued varieties of the 20 Paise for 1970, struck at Bombay (Mumbai Mint), Calcutta (Kolkatta Mint), Hyderabad Mint.

Is the 1970 one the rare one?

Partly. Of the 5 varieties struck that year the catalogue separates 2 Scarce from the rest. Which one you have depends on the mint mark, not the year alone.

Every 1970 variety, by mint

Mint	Rarity	Metal	Weight	Diameter	Thickness	UNC (catalogue)
Bombay (Mumbai Mint)	Scarce	Aluminium – Bronze	4.5 grams	22.00 mm		₹100
Calcutta (Kolkatta Mint)	Scarce	Aluminium – Bronze	4.5 grams	22.00 mm		₹125
Bombay (Mumbai Mint)	Common	Aluminium – Bronze	4.5 grams	22.00 mm	1.75 mm	not priced
Calcutta (Kolkatta Mint)	Common	Aluminium – Bronze	4.5 grams	22.00 mm	1.75 mm	not priced
Hyderabad Mint	Common	Aluminium – Bronze	4.5 grams	22.00 mm	1.75 mm	not priced

Check it against your own coin

Every 1970 variety weighs 4.5 grams and measures 22.00 mm across, circular. If yours is noticeably lighter or smaller it is not a 1970 20 Paise, whatever the date reads as.

Weigh it on any scale that reads to a tenth of a gram, and measure the diameter across the widest point. Wear removes very little weight, so a coin more than a few percent off the figure above is usually a different issue rather than a worn one.

Reading the mint mark on your coin

The mark sits under the year. A star is Hyderabad, a diamond or dot is Mumbai, a solid dot is Noida, and no mark at all is Kolkata. On a 1970 20 Paise that mark is the whole question, because the year on its own does not separate one variety from another.

What it is worth

2 of the 5 varieties carry a reference price, from ₹100 to ₹125 in uncirculated condition. A coin that spent years in circulation is not that coin.

Every other year and denomination is catalogued here, and this explains how selling actually works.