Oxalis adenophylla.

I bought one for Denny after he had his stroke... I went to an Ace Hardware. I think it was about 25 dollars....but it will pick up a dime. It is called an "Unger" here is the web site (if they still have the same web site) www.ungerglobal.com patti

Value would depend on better information than I have -- also your area. I know consignors in my area have difficulty selling sets like that because they don't fit in with smaller, modern, busy lifestyles. Also, it is not in pristine condition. I would ask antique dealers or furniture consignors in your area.

I recently installed a Kohler shower rail and it used that type of fitting. The fitting screws into the nipple in the wall, using teflon tape and pipe dope. The shower head then pushes onto the fitting to engage the O-rings, and there are two screws holding it to the wall. Kohler offered three different lengths for the threaded fitting, and I had to use one that had the right range to handle the distance from the tile face to the fitting in the wall. It looks like your fitting may came in two parts, and the part without O-rings is what you use to adjust the length. If you can't get the fittings apart, you might need to find a different combination of wrenches. If you haven't bent the piece with the O-rings out of shape you should be able to get it to seal again, even if the other piece is destroyed during the removal. Bruce