Found behind a radiator, it is a mini time capsule for the mid-80s.
As well as a cheque card from the now defunct Midland Bank, it contained 12 pence in change, and photo ID with a black and white passport photo.
The bank card belonged to an Elizabeth Sarah Dale.
Bosses at the 02 Ritz Manchester were clearing out when they made the discovery
There was also a Cheshire Libraries and Museums card, a University of Manchester Whitworth Park Residents' Association card from 1985/86 and a payslip.
Elizabeth lived in Thelwall, Warrington, Cheshire. Chris Mann, bar manager at the O2 Ritz nightclub in Manchester, said: "We were clearing out the other day and it had fallen down the back of a radiator.
"She would been about 18 or 19 back then, so might be in her early 50s.
Now they want to return the wallet to its rightful owner
"It's coming up to our 90th birthday so it might be nice to reunite it with its owner.
"We want to find out what they were doing in the Ritz and whether they actually remember it."
- If you are the reveller who lost her wallet contact the Mirror on 0800 282 591.