This picture shows what a normal Schuko-plug look like. Yes, I know you know what it looks like. But have you seen all the approvals? Most plugs look like this. A common market in Europe, eh? Manufacturers still get approvals from every country, despite the fact that they don't need to do so.

[Linked Image from interpower.com]

Starting from top left, going counter- clockwise:

GOST - Russia *
IMG - Italy
CEBEC - Belgium
ÖVE - Austria
Semko - Sweden
Nemko - Norway
Demko - Denmark (owned by UL!) **
Fimko - Finland
NF - France
VDE - Germany

Between the pins:
Kema-Keur - Holland

* There has been a myth around that plugs intended for Russia must have thinner pins than for other countries. Seems to be untrue, but several manufacturers make such plugs. It's likely that they are not safe if used in other countries.

** The Demko mark is possibly faked, since this plug presents a risk of both fire and electrocution if used in a Danish socket.