Gold Coins of 1975
No full sovereigns or half sovereigns were not minted in 1975, indeed very few countries issued any gold coins in 1975, however we can tell you what alternatives exist.

World Gold Coins

Country	Denomination	Diameter	Weight	Alloy	AGW
Bahamas	$200	28.5	10.9200	.9166	0.3219
Bahamas	$150	24	8.1900	.9166	0.2414
Bahamas	$100	20	5.4600	.9166	0.1609
Bahamas	$50	17	2.7300	.9166	0.0804
Barbados	$100	25	6.2100	.5000	0.0998
Belize	$100	25.5	6.2100	.5000	0.0998
Bermuda	$100	24.5	7.0300	.9000	0.2034
British Virgin Islands	$100	23.5	7.1000	.9000	0.2054
Cayman Islands	$100	31	22.6801	.5000	0.3646
Colombia	2,000 Pesos	23.5	8.6000	.9000	0.2488
Colombia	1,000 Pesos	20	4.3000	.9000	0.1244
Cook Islands	$100	28	9.6000	.9000	0.2788
Fiji	$100	35	31.3600	.5000	0.5042
< ahref="ghana.html">Ghana	2 Pounds	29	15.9800	.9166	0.4711
Haiti	500 Gourdes	24.5	6.4600	.9000	0.1869
Haiti	200 Gourdes	18	2.9100	.9000	0.0842
Gibraltar	100 Pounds	34	31.1000	.9166	0.3038
Gibraltar	50 Pounds	33	15.5500	.9166	0.4585
Gibraltar	25 Pounds	22	7.7700	.9166	0.2291
Hong Kong	$1,000	29	15.9700	.9166	0.4708
Isle of Man	5 Pounds	36	39.9500	.9166	1.2588
Isle of Man	2 Pounds	29	15.9253	.9166	0.4695
Isle of Man	Sovereign	22	7.9881	.9166	0.2355
Isle of Man	Half Sovereign	19	3.98131	.9166	0.1173
Israel	500 Lirot	30	20.0000	.900	0.5787
Jamaica	$100	26	7.8300	.900	0.2265
Laos	100,000 Kip		7.3200	.9000	0.2118
Laos	50,000 Kip		3.6000	.9000	0.1041
Malawi	10 Kwacha	39		.9000
Malta	£50	28	15.0000	.9166	0.4418
Malta	£20	22	6.0000	.9166	0.1767
Malta	£10	19	3.0000	.9166	0.0883
Mauritania	500 Ouguiya	29.5	26.0800	.9200	0.7714
Mauritius	1,000 Rupees	33	33.4370	.9000	0.9676
Morocco	5 Dirhams	29		.9166
Morocco	250 Dirhams	21	6.4500	.9000	0.1867
Netherlands	1 Ducat	24	3.5000	.9860	0.1109
Nicaragua	2000 Cordobas	31	19.2000	.9000	0.5556
Nicaragua	1000 Cordobas	25	9.5000	.9000	0.2749
Nicaragua	500 Cordobas	21	5.4000	.9000	0.1563
Nicaragua	200 Cordobas	15	2.1000	.9000	0.0608
Oman	100 Baiza	28.5	22.7400	.9166	0.6705
Oman	50 Baiza	24	12.8900	.9166	0.3801
Oman	25 Baiza	18	5.9600	.9166	0.1757
Panama	500 Balboas	44	41.7000	.9000	1.2067
Panama	100 Balboas	26	8.1600	.9000	0.2361
Papua New Guinea	100 Kine	27	9.5700	.9000	0.2769
Philippines	1,000 Pisos	26	9.9500	.900	0.2879
San Marino	2 Scudi	21	6.0000	.9166	0.1769
San Marino	1 Scudo	16.5	3.0000	.9166	0.0883
Senegal	2,500 Francs	34	39.9300	.9166	1.1760
Senegal	1,000 Francs	29	15.9500	.9166	0.4697
Senegal	500 Francs	23	7.9600	.9166	0.2344
Senegal	250 Francs	19.5	3.9800	.9166	0.1172
Sierra Leone	10 Golde	38	57.6000	.9166	1.6965
Sierra Leone	1 Leone	38	57.6000	.9166	1.6965
Singapore	$500	34	34.5594	.9000	1.0000
Singapore	$250	28	17.2797	.9000	0.5000
Singapore	$100	19	6.9119	.9000	0.2000
South Africa	One Ounce Krugerrand	32.7	33.93	.9166	1.00
South Africa	2 Rands	22.05	7.9881	.9166	0.2354
South Africa	1 Rand	19.30	3.9940	.9166	0.1177
Tonga	100 Pa'anga	29	20.0000	.9166	0.5897
Tonga	75 Pa'anga		15.0000	.9166	0.4423
Tonga	50 Pa'anga		10.0000	.9166	0.2948
Tonga	25 Pa'anga		5.0000	.9166	0.1474
Turks & Caicos	100 Crowns	25.5	12.4400	.5000	0.2000
Turks & Caicos	50 Crowns	21.5	8.9575	.5000	0.1417
Turks & Caicos	25 Crowns	16.5	3.1100	.5000	0.0500
Uganda	One Pound		9.8800	.9166	0.2913
USSR	10 Roubles	21	8.6026	.9000	0.2489
Venezuela	1,000 Bolivares	32	33.4370	.9000	0.9676
Venezuela	500 Bolivares	30	18.0000	.9000	0.5209
Zaire	100 Zaires		33.4370	.9000	0.9676

Key
Denomination = Face value
Diameter = Approximate Diameter in millimetres.
Weight = Weight in grams.
Alloy = Fineness of gold.
AGW = Actual fine gold weight in troy ounces.