INDIA Rupee 1 Cu-Ni Definitive 28mm

Denomination	1(One) Rupee
Years	1975 to 1982
Composition	Copper(75%) Nickel(25%)[Cu-Ni]
Diameter	28 mm
Weight	8.000 gm
Edge	Security(See Image Below)
Observe	National Emblem(Ashok Stambha) and name of country in Hindi and English. See Image for different types of observe side.
Reverse	Denomination in numeral and in word(Hindi and English), Date, Mint mark, Two grain(wheat) stalk flanks denomination.
Mint Marks	Mumbai(B) and Kolkata(C). See mint marks to view the images of mint marks.
Special Note	Often called "dabbu coin". Rumored that some coins have some special metals in them which make them extremely valuable. Though there is no truth in that claim, many people are scammed on this.
KM value	KM#78.1 (1975-1979 type 1); KM#78.2 (1975-1976 type 2); KM#78.3 (1979-1982 type 3)

EDGE
OBSERVE
Type 1	Type 2	Type 3
1. Small Lion 2. Toothless 3. Small D 4. 2-3 far rows	1. Large Lion 2. Long D 3. 4-5 far rows	1. Small Lion 2. Two teeth 3. Small D 4. 4-5 far rows

COIN IMAGE

1975
missing	missing
Kolkata type 1	Kolkata type 2	Mumbai type 1

1976
Kolkata type 2	Mumbai type 1

1977

Mumbai type 1

1978
missing
Kolkata type 1	Mumbai type 1

1979
missing		missing
Kolkata type 1	Kolkata type 3	Mumbai type 1	Mumbai type 2

1980
missing
Kolkata type 3	Mumbai type 3

1981
Kolkata type 3	Mumbai type 3

1982

Mumbai type 3