> Feathers McGraw’s body, including his wicked flippers, is made of clay, crafted over a fully jointed internal metal armature. The red glove he famously wears as a remarkably effective disguise — one that somehow seems to fool Wallace every time — is made of silicone. His eyes are glass pins, while his beak is fast-cast resin. The tea-stained mug he grips is resin. He comes displayed on a wooden base.
Mostly, yes! They use a very specific clay from a producer which went out of business a few years ago. They've bought up all the stock they can and use that clay for pretty much all of the character puppets, along with other materials. There was a great documentary on the BBC a couple of years back which went behind the scenes and talked about how they make and use the puppets.
"Curses, Gromit! Fire destroys animation firm's history on eve of box office triumph"
https://www.theguardian.com/uk/2005/oct/11/arts.media
That looks to be what's being auctioned.
Auction link: https://propstoreauction.com/auctions/catalog/id/549?page=1
> Feathers McGraw’s body, including his wicked flippers, is made of clay, crafted over a fully jointed internal metal armature. The red glove he famously wears as a remarkably effective disguise — one that somehow seems to fool Wallace every time — is made of silicone. His eyes are glass pins, while his beak is fast-cast resin. The tea-stained mug he grips is resin. He comes displayed on a wooden base.
https://www.youtube.com/watch?v=f19hF7-nT8g
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