I have a pair of Lii Song / Lii Audio (the US vendor) Silver 8 and Fast 15 drivers for sale.  Both pairs of drivers come with the original packaging.  The were face mounted in a painted baffle so it is possible there might be some paint on the front rim but if so it should be easy to remove.  Otherwise the drivers are in excellent condition and other than being burnt in for 100+ hours have only seen a few hours of use.  I have purchased Magnepan 20.7s and my open baffle experiments are behind me.

Silver 8 drivers are $360 including shipping and the Fast 15 drivers are $485 including shipping.  They are also available for pickup in the Seattle Tacoma area.

Yes, they would work with a low watt amp.  I used them with a 300B amp but I don't see why they wouldn't be great with a 2A3 amp.