The scope is about 4 years old and has been attached to only one rifle, which I have just sold because it had sat in the cupboard doing virtually nothing since I got it. The scope is, therefore, in generally excellent condition, in particular the optics. There are some cosmetic marks/scratches underneath where rings were, caused when I removed it from the Apel scope rings (which may be the best/most expensive on the market but are a nightmare to get a scope out of!). It has a No: 4 reticule and you can read all about it on the Zeiss website: www.zeiss.de/en , in the Products/Riflescopes section.
The scope has a full, transferable, 10 yr warranty from Zeiss with 6 years remaining. Proof of purchase is available.
The cheapest price for a new one seems to be c. £1,200, so I think £850 would seem a very fair price for this one.
Please 'PM' me with any interest