I am not sure what the question is, exactly... But it is referring to a Chinese coin, and the "mace" and "candareens" are units of weight. The coins are made of silver, and weighed that amount.

Real ones are worth a lot of money, but fake ones are common (if they have any English or roman letters or numerals), and are worth a couple of bucks.

A candareen (Chinese: 分; pinyin: fēn; Cantonese Yale: fàn) is a traditional measurement of weight in East Asia. It is equal to 1/10 of a mace. It is approximately 378 milligrams. A troy candareen is approximately 374 milligrams.

So what we are talking about weighs either "72 candereens" or "7.2 mace," and is likely a coin made from silver. or fake silver. or a fake coin. or both.

10 milligrams = 2.20462262 x 10-5 pounds = .1 grams = .0001 kilograms = 0.000352739619 ounces = 9.806652 x 10-5 newtons = .05 carats = 6.0225 x 1021 atomic mass units = 5.543545 x 10-8 koku = 2.666667 x 10-6 kann = 1.666667 x 10-5 kinn = 0.002666667 monnme = 2 hao = 2.671725 x 10-4 tael = 6.666667 x 10-4 baht = 6.666667 x 10-4 tical = 0.02645547 candareen = 0.02645547 fan = 0.02250483 dolya = 2.042901 x 10-5 livre = 1 x 10-7 dopplezentner = 0.0018404 milliaresium = 0.1129412 halk = 0.01763698 gerah = 2.939497 x 10-7 talents = 0.05217487 nakhud = .1543236 grains = 1.57473 x 10-6 stone = 2.204623 x 10-7 short hundredweights = 1.968413 x 10-7 long hundredweights = 1.102311 x 10-8 short tons = 9.842065 *10-9 long tons = 3.086472 troy mites

10 milligrams = 2.20462262 x 10-5 pounds = .1 grams = .0001 kilograms = 0.000352739619 ounces = 9.806652 x 10-5 newtons = .05 carats = 6.0225 x 1021 atomic mass units = 5.543545 x 10-8 koku = 2.666667 x 10-6 kann = 1.666667 x 10-5 kinn = 0.002666667 monnme = 2 hao = 2.671725 x 10-4 tael = 6.666667 x 10-4 baht = 6.666667 x 10-4 tical = 0.02645547 candareen = 0.02645547 fan = 0.02250483 dolya = 2.042901 x 10-5 livre = 1 x 10-7 dopplezentner = 0.0018404 milliaresium = 0.1129412 halk = 0.01763698 gerah = 2.939497 x 10-7 talents = 0.05217487 nakhud = .1543236 grains = 1.57473 x 10-6 stone = 2.204623 x 10-7 short hundredweights = 1.968413 x 10-7 long hundredweights = 1.102311 x 10-8 short tons = 9.842065 *10-9 long tons = 3.086472 troy mites