Miller Arrow Fluid Head model#1010 with model #280 plate.These were designed to hold 0-20 Kg maximum weight , used to be worth over $7k new. Barley used, almost no wear. Is serviceable and parts are still available.
Does not come with handle
Also have a Miller Sprinter 2 carbon fibre tripod that came with tbe fluid head for sale , listed separately.
All items advertised elsewhere on other sites.