1988 1 Rupee Coin Value

The catalogue records 6 catalogued varieties of the 1 Rupee for 1988, struck at Noida Mint, Bombay (Mumbai Mint), Calcutta (Kolkatta Mint), Hyderabad Mint.

Is the 1988 one the rare one?

Partly. Of the 6 varieties struck that year the catalogue separates 3 Scarce, 1 Rare from the rest. Which one you have depends on the mint mark, not the year alone.

Every 1988 variety, by mint

Mint	Rarity	Metal	Weight	Diameter	Thickness	UNC (catalogue)
Noida Mint	Rare	Copper – Nickel	6.00 grams	26.00 mm	1.47 mm	not priced
Bombay (Mumbai Mint)	Scarce	Copper – Nickel	6.00 grams	26.00 mm		₹150
Calcutta (Kolkatta Mint)	Scarce	Copper – Nickel	6.00 grams	26.00 mm		₹150
Hyderabad Mint	Scarce	Copper – Nickel	6.00 grams	26.00 mm	1.47 mm	not priced
Bombay (Mumbai Mint)	Common	Copper – Nickel	6.00 grams	26.00 mm	1.47 mm	not priced
Calcutta (Kolkatta Mint)	Common	Copper – Nickel	6.00 grams	26.00 mm	1.47 mm	not priced

Check it against your own coin

Every 1988 variety weighs 6.00 grams and measures 26.00 mm across, circular. If yours is noticeably lighter or smaller it is not a 1988 1 Rupee, 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 1988 1 Rupee 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 6 varieties carry a reference price, at ₹150 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.