I tried that one to try with our internals but it is very different.....
EDIT, the board won't fit, removed some plastic from the inside of case, but buttons don't even line up and to get closer, board would need cutting and has tracks in the way, what's more, this key isn't very attractive and is nearly 50% thicker.
Nice looking but internals won't fit judging by photos, but maybe could be programmed in if is 433MHz?
Not gonna try that myself due to price
(new is £80)
If you get a new shell for ours, be careful, there are two types that look the same but split in a different place.
There is a screw under the logo, then pull in half like this
https://www.youtube.com/watch?v=0RZrQbZQ8yM and has a seperate glass-tube RFID chip in it, the later KESSY ones don't have a seperate RFID chip (I think they have two surface mounts on the PCB at 90˚ to each other) and the case split open by removing the screw under the logo flipping the battery cover off and removing 2 more screws.
I also *think* that the nice newer key with the chrome end is rechargebale and you have to plug it in the car from time to time, but maybe that's just on some models of Audi.
I think the best thing is eitehr get new 'fake' shells from China, or look into the new SMART key with the chrome end and see if you can programme a new or used one onto our cars.