Uncommon sight? You might think it would be uncommon to see an AFV pulled from a lake or other body of water, a bog, or even a muddy area; but it is fairly common. The following videos reflect just that; tanks that were lost but are now found again:

A Soviet BT-5:

A German Stug III:

A German Stug 40:

A British Valentine used by the Soviets through the Lend-Lease program:

A Soviet T-34:

Another Soviet T-34, this one with German markings:

A Soviet T-70:

A German Jagdpanzer 38(t) Hetzer:

A Soviet KV-1:

Another Soviet KV-1:

A Soviet T-60:

A German Panzer III:

A US Sherman M4A2; I believe a Soviet copy given under the terms of the Lend-Lease program:

A Soviet BT-7: