Neff oven (Gomshall GU5)

Neff built-in stainless steel cooker, standard size (double oven, second small oven also has grill). Doesn't have the model number on the outside so not sure which one but it's about 10 -12 years old. We replaced it with a free standing oven so it's now available. I'm afraid it does need a serious clean but it is in full working order or was when last used! You would need to be able to move this and disconnect it - will need at least two strong people (and sorry, we can't help carry it down stairs).