What Is Soveriegn Worth

Several mints across the British Empire struck sovereigns in 1918. Look for the mintmark on the "ground-line" the horse is standing on, directly above the date.

The three Australian mints (M-Melbourne, P-Perth and S-Sydney) are the most commonly encountered with that date, and unless genuinely uncirculated, they're not worth more than bullion value.

The two harder to find mints with that date are C-Canada (Ottawa) and I-India (Bombay). Unless well worn, both of these carry a collector's premium over bullion value. Here in Australia, the Australian ones are much more likely to be found.

Be aware it can be hard to judge how worn a gold coin actually is. Gold doesn't tarnish, tone or discolour in circulation like other metals do.

How upset in degrees is the 1887? Could be interesting...

Just to clarify: there were two portrait types used for 1887 British coins: "young head", with the queen uncrowned, her hair tied back behind her, and "jubilee head", with the queen wearing a tiny crown on top of her head and her hair hidden behind a veil.

Young head coins are always 180 degrees upset "like American coins", while jubilee head coins are always "right way up", or 0 degrees rotation.

As for value, we really can't say without seeing pics, except to say they're worth at least bullion value. I have no idea what the "prestige Australian gold sovereign collection" is, or who assembled it, so I can't say what quality of coins might have been included. They wouldn't have originally come from the mint like that. Is there a brand name on the packaging -something like Downies? Sherwood? Macquarie Mint?

The prestige collection was assembled by Downies. All coins from the prestige collection came from one large hoard. (It's in the Coin Review somewhere).