1939~1950 Straits Malaya 10 cent coin

Technical Specifications:
Type 1
Diameter: 18mm
Weight: 5.83 gm.
Composition: .750 silver
Edge: Milled
Mint: Royal Mint, UK., (with i mintmark) Calcutta Mint
Year & mintage:
1939 -10,000,000 pcs
1940 - 17,000,000 pcs
1941i - rare

Type 2
Diameter: 18 mm
Weight: 2.71 gm.
Composition: .500 Silver
Edge: Milled
Mint: Royal Mint, UK.
Year & mintage:
1943 -5,000,000pcs
1945 - 15,000,000 pcs

Type 3
Diameter: 18 mm
Weight: 2.71 gm.
Composition: .750 Silver
Edge: Milled
Mint: Bombay Mint, UK.
Year & mintage:
1945i -8,048,100 pcs

Type 4
Diameter: 19.5 mm
Weight: 2.82 gm.
Composition: Copper-Nickel
Edge: Milled
Mint: Royal Mint, UK.
Year & mintage:
1948 -50,000,000pcs
1949 - 15,000,000 pcs
1950 - 50,000,000 pcs