Okay, so this isn’t strictly an “original” item of Fifth Doctor costume or prop, but it dates from the Peter Davison era.
It’s an interesting item, and did sell for quite a lot of money, given what it is.
Doctor Who Tardis control panel from the original Longleat Doctor Who exhibition from the 1970s/80s. This item was one of three at the exhibition but this particular item is purported to have original parts of the Tardis. This item was one of a handful of items which survived the fire at Longleat that destroyed most of the exhibition in the mid-90s. It plugs in and has working sounds and lighting
Control panel size,
Width - 39cm
Height - front of panel 8cm, back of panel 23cm
The exhibition itself was built by a company called Parker Hinson out in Ruislip and it might have been that the panels were made or animated by Tony Oxley formerly of the Visual Effects dept.
Regarding postage, weight at a guess is approx 25kg, item will need to be picked up or by a courier. Item can be delivered within a 100 mile radius of St.Austell for £50 by local delivery man.