There were no Queen Victoria commemorative coins issued by the Royal Mint.
There were a great many commemorative tokens, medallions, medalettes and souvenirs produced for a great variety of occasions.
About the only thing they have in common is that they are round.
Please check your coin. 1897 was the year of Queen Victoria's Diamond Jubilee or 60th year on the throne. Sixpences were not issued as commemorative coins. You may have a Sixpence like souvenir token or medallion.
A commemorative coin is made in honor of something, like a historical event or a famous person.
At the very least, it will be worth the current bullion value of whatever gold and silver was used to make it. Presumably there is a coin on the chain. Whatever collector value the coin may have had was lost when the coin was modified as a piece of jewellery.
The Battle of Jutland was in 1916. Can you provide some information about the coin like a country or mint name, the year of minting, what the coin is made from, its diameter, what is inscribed on the coin, etc?
Gold plating by itself isn't worth much, so it really depends on the metal content of the coin. Commemorative coins like that don't have much value unless it's made of a precious metal.
Timbuktu is a place name, not a personal name like Victoria, Regina, etc.
Commemorative is five syllables divided like this: com-mem-o-ra-tive.
You need to provide much more information. That motto appears on all coins of the current British Commonwealth and was on all coins of the empire when Victoria was queen. Please post a new question with the coin's denomination, how worn it is, and what country issued it. If there's no country shown on the coin it's probably from Britain.
About $30 in silver scrap. Most commemorative "coins" like that aren't worth much of anything to collectors beyond their value of the metal they were struck in, of course if you have a buyer of Rose Bowl memorabilia they might pay a bit more.
Sounds like you have a 1903 commemorative medal.
It doesn't sound like a genuine US coin. There were no silver dollars struck from 1905 to 1920 inclusive, and no gold $1 commemorative coins were struck in 1913.Please put any additional information you might have about this coin in the Discussion Area.
It's not a circulation coin. It sounds more like a medal or some other commemorative piece, but more details are needed. Please post a new question with a more complete description, including its size, color, and any wording on it. Thanks!