Andy,
Never post on here usually not sure why - probably as always more to learn than babble on about but might be able to add something - what you have there on FleaBay is a 2104 (52 record) Wurlitzer from 1957.
The four most desirable models from Wurlitzer in the now very popular Silver (45 era) age are in descending order the 2000 (200 play, 1956), 2100 (200 play, 1957), 1900 (104 play, 1956) and 2104 (104 play, 1957).
1956 is the centenary year for Wurlitzer and the models have a premium for that - the 1957 models are a little less but not much.
The 100 record, 200 play models (2000 and 2100) had turning pages that broke down and were abandoned after 1957 and therefore are high desirable..
Price wise a mint 2000 could go for £10-14k nowadays maybe even more, the 104 play 1900 is just over about half that - sometimes more a touch more - and the 1957 are roughly a (few) grand cheaper. So typically a mint 2104 might be as around the £5-7k I would say but all these 4 models carry a premium over others from the era and might command a tad more especially from a dealer.
Silver age boxes are on the roll at the moment - the golden age ones are falling to the domain of serious collectors - no one wants a modern era one unless you are limited to a paying a few hundred quid and have a special fondness for a non visible mechanism in some might say to modern tastes - ugly boxes.
Rich middle aged guys can't play their records from their youth on 78, but can put one 45 jukebox in their game room - and the first choice for many is a Wurlitzer and one of the glory four models..
Parts are readily available - Geoff the Jukebox Man in the midlands (not a million miles away from you) but the real total sources are Stamann (German) and Victory Glass (US).
Couple of UK shows a year -on the vain a bit.
Dealers can charge like a wounded bull as can restorations but I have found Adrian - the Juke of Shrewsbury to be great on the second of my restos.
For a man of your abilities it will be easy to get the mechanism working - these are over engineered and design to be in a pub/café on constant use.
Amps are straightforward to overhaul and many to help out.
Cabinets and older electricals are the issues that take time and money.
Hope that helps a tad...
Cheers,
Tim
Current Line Up : Wurlitzer 2000 (1956), Ami H200E (1957), Chantal Meteor (1959), Wurlitzer 1080 (1947)
WTB : Wurlitzer 61 (1939), Wurlitzer 850 (1941)