What's the name of a non-round coin?

Quadrates
Klippe
Wedges
Triangles
A klippe is a square coin minted on more easily produced square flans either using round or square dies. These coins were originally issued under unfavourable conditions, such as a city under siege. Such emergency coins were issued in Vienna in 1529, while the city was besieged by the troops of the Ottoman Empire.
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Answers by country

Quadrates
Klippe
Wedges
Triangles
answers
flagAustralia
21%
73%
5%
0%
19
flagthe Netherlands
9%
63%
27%
0%
11
flagGreece
40%
50%
0%
10%
10
flagthe United Kingdom
36%
43%
12%
7%
71
flagthe United States
35%
37%
24%
3%
62
flagGermany
25%
32%
33%
8%
166
flagPoland
30%
31%
24%
13%
1856
flagAustria
22%
19%
51%
6%
31
flagSwitzerland
33%
8%
50%
8%
12