Hi Mick
I have seen loads of lower engine mounts like that, you can see the dark line even before you remove, and once you do that is what you see in your photo, First choice is always an original mount with the letter T stamped on it for a diesel, P for 2.0 2.5 Petrol, and M for the 1.8 &1.8T
Next choice would be Power flex, then Jag mount with a bit of modification, only reason I am putting Jag mount as third choice is I have only just started using them and up to now they look very robust and do the job really good, and maybe in very near future I can say on par with the original mount