This is on Cavendish Road, Carlton NG4, just after meeting Coningswath Road. It has a similar shape to a Boundary Marker, but does not have any of the normal markings for Nottingham or Carlton (only a capital ‘V’ + numeral ‘3’). Anyone have any idea what it is?

next day added:
fwiw it is on the map here.

added Friday 9 Sep:

https://www.openstreetmap.org/user/Piero Nussio sent me a personal message, and it looks to be an interesting possibility:

The one shown in the photo is a tipical “milestone” (in italian: pietra miliare). Was in the roads to show distance from the beginning of the road. The capital “v” stands for the number “5” in the roman way to write numbers -was the symbol for an hand, wich has 5 fingers- So says it’s the fifth mile from the beginning. The other 3 is an arabic (nowdays number) sign for the distance whithin the current mile. The use of arabic numbers (instead of “III”, in the roman way) means that the stone is more recent than middle age, when arabic numbers went in use.

http://www.milestonesociety.co.uk/aboutmilestones.html: this link has some info about roads in the UK, coming from Roman times up to the modern age. Easily digestible, and most interesting. Here is a snippet:

(the Romans marked) “every thousandth double-step with a large cylindrical stone. 117 still survive in the UK. The Latin for thousand was ‘mille’ and the distance was 1618 yards; the eventual British standard mile was 1760 yards, although ‘long’ miles also existed into the 19th century.”

The one problem with Piero’s observation is that it is just 1km to Carlton & 2km to Mapperley. I would expect Nottingham to be less than 3 miles away, but with no direct route from that milestone (if that is what it is). I’m still not certain.

I still cannot find an equivalent photo to the above of a milestone.