German Helmet in Amsterdam

Whilst walking outside of Amsterdam's city centre, I spotted this earth dug German helmet sitting in a shop window. It was part of a display in a hardware shop and not for sale. There were also a few spent rounds which look like they were dug up too.

I love spotting these unexpectedly when out and about. I remember when I was a child and going to jumble sales/markets and spotting numerous Swastika branded bits and pieces mixed in-between Star Wars figures and cup and saucer sets from the Seventies. I never see anything about anymore in places like that which is a massive shame really.