The Sticker | Combine Helmet is a High Grade sticker. It comes from the Half-Life: Alyx Sticker Capsule.
Sticker
Health (Gold)
Last Vance (Gold)
Big Hugs (Holo)
Combine Helmet (Holo)
Lambda (Holo)
Vortigaunt (Holo)
Big Hugs
Gnome Mercy
Greetings
Lambda
Last Vance
Vortigaunt the Painter
