If anyone can be of assistance, I would be GREATLY appreciative. I have some great aluminum (23 inch) cinema displays. They still work great, and I would like to mount them on the wall. Now of course none of apple monitors are compliant with a VESA mount, with a need for their adapter. The problem is, Apple doesn't provide, or sell this part anymore. They have their newer VESA mount for LED cinema displays, iMacs, and Thunderbolts. This item will not work as the aluminum cinema display is a flat back, and this mount is made for the newer curved back displays Apple makes. Soon, after a lot of research I have come empty handed to finding this part anywhere. The only sites I find it on are either click bait sites/scammers, or a couple sites that are live, but defunct. So does anyone have any idea where one might find this part. They have a few on eBay and Amazon...but people selling for 200-600 dollars since it is a rare part. lol. I'm shocked their isn't any one third party knock of this. Any help or advice is greatly appreciated, I really want to get at least one of these hung on the wall. thanks. 
For what it is worth, the vesa mount part number for this was
M9649G/A
For what it is worth, the vesa mount part number for this was
M9649G/A