In the 1961 Shooters Bible, all the Sarasqueta imports are called "Zephyr" followed by a model name. That includes three boxlocks (Woodlander, Pinehurst, and Double 10) and four sidelocks (Sterlingworth, Uplander, Upland King, and the big Thunderbird, a 10 ga magnum with 32" barrels). I've only seen one Upland King. It came with a single trigger and vent rib. Upgraded wood, engraving, and special stock dimensions were all available. For all 3, the buyer paid about $150 on top of the standard price of $218 for an Upland King.