More info on it here:
Burzynski Tripod Head

This Ballhead is what i consider one of the best ballheads out there for the long telephotos. Its rare and its AWESOME! Currently it can only be purchased over seas and shipped here at a premium. Current price at a overseas retailer is 360 Euro ($516) plus Shipping.

Mine is in great condition as you can see from the pics and video. Only negative on mine, is that one of the knobs cracked during a move, and had to be epoxied. It does not effect performance in the slightest, just something i would like to disclose up front.

The specs states it will hold up to 110 lbs of load, now thats a TON, im sure this thing could hold the monster Sigma 200-500 2.8 without a problem.

Asking price is 325 plus shipping, Paypal can be used if paying by gift payment without any fees, if choosing to pay the normal way please add 3%
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video of its operation
YouTube - Video 39

Please feel free to shared_pm or email me. Thanks