The above piccolo is a Yamaha YPC62 Wood Piccolo fitted with a Flute Makers Guild Silver Headjoint (Made by Ewen McDougall)
It has few special features other than a split E mechanism.
The above photograph and notes are as accurate as my knowledge on the subject permits.
If anything above is factually incorrect, or if anyone can usefully improve or add to the above notes then please feel free to email me at john@fluteweb.net