2015 Silver Two Pound Proof The Royal Navy Box 2015 Silver Two Pound Proof The Royal Navy: Yet Another Product Variant - The 2015 Silver Two Pound Proof The Royal Navy is a silver proof version of the 2015 £2 currently in circulation, and I want to use this to illustrate how the Royal Mint is augmenting its coins by issuing product variants to reach as large as possible coin collector base.