Arrow Dynamics Hawkeye helmet, older design, but fully functional. (the paint is chipping at a few places but there are no structural problems). The lining is in very good shape.
It has a near-new cutaway installed.
There is a Schumacher Quick Shoe on the top and an improvised GoPro mount in the front assembled by the previous owner (the GoPro mount comes with the screws and a plastic pin mount that I have taken off since I used Sony, not GoPro). The aluminium plate on the side that I used for a Sony action cam can be taken off easily (held by plastic screws and small holes).
The cutaway is worth $ 30. A new Schumacher Quick Shoe is worth $ 90+.
The sale price is USD 80, plus shipping (or EUR equivalent).