S101715101 Siemens ECU with a 7A1201 EPROM in it. Completely standard and not fiddled with like a lot of them are.
I pulled it from my local scrappy along with all the conversion parts for my 340 but didn't end up using it. Cost me £50 from the yard

I have no idea what working state it is in as I didn't run a R19 loom in the end, if you want to pick it up (just outside Southampton) I've no issues with you testing it in your car before buying though. Looking at the board there are no visible problems though.
Chris