Did you google for them?
The Britannia gold coins contain one troy ounce of gold and are .917 (91.7% or 22 carat gold) with the non-gold component being copper until 1989 and silver from 1990. (Wikipedia)
The Gold 1915 Austrian 100 Corona is almost certainly a bullion restrike, worth the metal price (AMPEX, for example sells certified version for $49.99 over spot - http://www.apmex.com/product/64073/...64-agw-9802) Gold Content, .900 fine (21.6 karat) = .9802 of an ounce per coin.
The Britannia gold coins contain one troy ounce of gold and are .917 (91.7% or 22 carat gold) with the non-gold component being copper until 1989 and silver from 1990. (Wikipedia)
The Gold 1915 Austrian 100 Corona is almost certainly a bullion restrike, worth the metal price (AMPEX, for example sells certified version for $49.99 over spot - http://www.apmex.com/product/64073/...64-agw-9802) Gold Content, .900 fine (21.6 karat) = .9802 of an ounce per coin.
-----Burton
Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/
50+ year / Life / Emeritus ANA member (joined 12/1/1973)
Life member: Numismatics International, CONECA
Member: TNA, FtWCC, NETCC, EveryCountry (online) coin club
Owned by three cats and a wife of 40+ years (joined 1983)
Author: 3rd Edition of the Sample Slabs book, https://www.sampleslabs.info/



















