Great post Simon. I know there is a lot of bad publicity for ebay (and rightly so when you see what some sellers try to get away with) but every now and again a peach raises its head.
I've a Heuer Super Professional and Heuer 1000 980.023 diver both of which required minor work. The Super needed original hands and was from Italy which I think put a few buyers off but I snagged it for a relatively good BIN price. The watch turned up within three days and is a solid honest piece and I'm really happy to have found it as I have had my eyes open for one for a few years. The Heuer 1000 was from the States but had been listed quite badly. It looked in quite poor condition but was worth the risk for parts alone and again I haven't seen this particular model listed since I started hunting for one in 2009 so I had to have it. A quick clean up by a fellow forum member and it actually was in really good condition under the grime. I've since tracked down a better condition bezel and insert which are quite hard to get hold of and I'm sure once this is fitted it will look fantastic (not that it doesn't now tbh).
I will have to get some pics once they are both back with me. In fact I've just received a GShock 5600 with bracelet for a snip so ebay has been kind of late. I doubt I'll ever match the Siffert although I did get one of my 2446C's from the States which was another great pick up (sadly missed) and seeing yours makes me want to revisit.
Jedi looks 8)