I have been servicing 7-8 4000-series decks. 2 4000's and 5-6 late 4002/4004's.
My own 4000 came with the original SP15 pickup, with the accessory-box and graphs of performance and stamp of quality etc. It dates 13th September 1973
Both 4000's have a strip with the original B&O logo (by appointment to the Royal Danish Court) and is darker finished than all the strips on the 4002 where the text is bigger and bolder. There is a demonstration video on youtube of a 4000 with the bold style lettering.
Beocenter 9300, Beogam CD50, Beocord 5500, Beomaster 3400, Beomaster 4400, 2 Beogram 4000, Beomaster 8000, 2 beogram 8002, Beovox S-75, Beovox MS150.2, Beovox RL6000, Beovox S-35, Beomaster 6000, 2 Beocord 9000, Beocord 8004, Beocord 5000, Form 1, 2x Beolink 1000, Beo4, MX3500, LS4500. Born 1993.