A red telephone box stolen from the city’s Buszy car park would have needed a number of people to move it, say police.
The traditional kiosk disappeared from its home in Elder Gate between 4pm on April 11 and April 13 at 6.30am.
Rosie Thurston, arts and media co-ordinator, said The Buszy team were “saddened” by the theft: “We are quite emotionally attached to it as it has been with us for three years.
“It took five guys to lift the parts when we got it - it’s so heavy.
“It was obviously a professional job. All we can assume is that they stole it to make some cash from the metal.”
Witnesses say they saw a white truck with a crane taking the telephone box away, but assumed it had been approved by a local authority.
Thames Valley Police say they are investigating the theft and are asking any witnesses who haven’t done so already to come forward.
A police spokesman said: “The phone box would have been very heavy and it is likely that a number of people would have been involved to move it.
We have had a couple of reports of potential sightings of the stolen box, but as yet it has not been located.
“A witness reported seeing a white truck in the area on Sunday morning.
“Police would like to speak to the driver of this vehicle and anyone else who saw anything out of the ordinary around the time of the incident.”