Silver and Gold Proofs for sale

As I mentioned in another post, recently I bought a collection with many interesting coins, but there are some, which I don't collect and would like to sell to recuperate some of the money spent. Before going on eBay, I will offer them here. I'd prefer sale, but trade is also a possibility, send me a message . All are in capsules and the condition is visible from the pictures:

Liberia - 5 Dollars 1992 - Nigel Mansell - https://en.numista.com/catalogue/pieces84823.html
Price - £17


Liberia - 20 Dollars 1997 - Queen Mother - https://en.numista.com/catalogue/pieces201467.html
Price - £20


Australia - 1 Dollar 2003 - Prince William 21st Birthday (Seriously?) - https://en.numista.com/catalogue/pieces175186.html
Price - £25


Australia - 1 Dollar 2003 - Anniversary of Coronation - https://en.numista.com/catalogue/pieces30876.html
Price - £25


Australia - 1 Dollar 2002 - Golden Jubilee - https://en.numista.com/catalogue/pieces30875.html
Price - £25


Australia - 5 Dollars 1990 - Kookaburra - https://en.numista.com/catalogue/pieces20585.html
Price - £25


Australia - 10 Dollars 1998 - Melbourne Cricket Ground - https://en.numista.com/catalogue/pieces136938.html
Price - £20


Solomon Islands - 25 Dollars 2003 - China Clipper - https://en.numista.com/catalogue/pieces201468.html
Price - £25


Cook Islands - 1 Dollar 1997 - Princess Diana - https://en.numista.com/catalogue/pieces40620.html
Price - £23


Turks & Caicos - 5 Crowns 2000 - Battle of Britain - https://en.numista.com/catalogue/pieces84152.html
Price - £18


Turks & Caicos - 20 Crowns 1995 - Queen Mother - https://en.numista.com/catalogue/pieces84058.html
Price - £20


Turks & Caicos - 20 Crowns 1993 - Anniversary of Accession - https://en.numista.com/catalogue/pieces201469.html
Price - £18


Gibraltar - 20 Pounds 2016 - Battle of the Atlantic - https://en.numista.com/catalogue/pieces135093.html
Price - £20


Gibraltar - Half Crown 2016 - Battle of the Atlantic - https://en.numista.com/catalogue/pieces174469.html
Price - £20


Great Britain - 100 Pounds 2015 - Buckingham Palace - https://en.numista.com/catalogue/pieces75070.html
Price - £90


Tristan Da Cunha - Half Crown 2010 - https://en.numista.com/catalogue/pieces60014.html (9ct gold, 2010 not numbered)
Price - £35


John F Kennedy - 35th President - 14ct Gold medallion
Price - £30


History of Britain - 70th Anniversary end of WWII - 14ct Gold with COA
Price - £35


Princess Diana - Portraits of a Princess - 14ct Gold with COA
Price - £30


Thanks