A little while ago, I bought an old oorijzer online (more about what that is here).
This is what mine looks like
You see them for sale regularly, but they’re generally the most ‘modern’ incarnation of an oorijzer, as worn with traditional clothing. These types of oorijzers are also generally very expensive, as there can be quite a bit of gold and silver in them.

Some of them are practically solid gold helmets.
The oorijzer I bought caught my interest as it was brass (so: affordable), and it was both narrow, and didn’t have any ‘attachments’ to the front. These attachments are practically always present on oorijzers from the 18th century onward. As I bought it I had some hope it’d actually be a 17th century one, but alas, it shows signs of breakage at the front. So it did have something attached to the front. I suspect this was silver of gold, and simply removed to be sold separately.

Damage on the ends, Something was attached here…

An example of an oorijzer of silver, with golden tips.
As mine doesn’t have a maker’s mark, it’s practically impossible to determine the age. The example above is made in 1899, while the one below is from 1640. See the difficulty? The basic shape stayed almost exactly the same in some areas of the country. Dating happens based on the maker’s mark, and the attachments to the front, both of which are missing.

An early oorijzer from ca. 1640.
Nevertheless, I’m quite happy with my oorijzer. Without the attachments at the front, it really does look and work like a late 16th/early 17th century one would. It has got the little holes on the ends (for pinning your cap in place). Most of the 16th century oorijzers don’t have that second feature, but other than that they actually look really similar to mine. Plus, the holes come into play in the 17th century at some point, as the previous one shows.

1575-1600

A slightly clearer view of the tips, including three little holes for the pins.
Most oorijzers of that period don’t really show, only maybe sometimes the ends. They’re very much useful items at this point in time, they serve to keep your headwear in place.
This is a rare period view of an oorijzer without a cap.
This invisibility also means I could use mine for the same purpose! Many of the different types of headwear in the Netherlands in this era require an oorijzer to look good. As I now own one, that opens up new possibilities. I don’t have any concrete plans, but I definitely want to make something to wear my oorijzer with some day!
To end this post, some lovely images depicting women wearing oorijzers with different caps. No, you mostly cannot see them, but look for how the cap sits very closely to the cheekbones, sometimes almost pressing into the cheeks? That effect is nearly impossible to achieve without an oorijzer. As we know they were worn widely during this era, I feel safe to say that they are in fact wearing one.
A simple black coif.
And a simple white coif, this time you see the oorijzer sticking out.
A more complex cap.
In this one, the compression in the cheeks is very visible. You cannot see the oorijzer, but you see the earrings. These would commonly be attached to the oorijzer instead of the ears, as you cannot see those.
Somewhat more fancy still. No oorijzer visible, but the cap is hugging the head.
I have many, many more examples on my pinterest here.