Howdy, I see you are from the Shire - so am I.
My guess is the blue glass one you have is not the ideal match for the mirrored one I have. However, if it fits and the price is right, it would get me back out on the road.
My next pair, will be secured in way they are not just clipped on. The current set up is both silly and very dangerous.
How much would you sell it for?