It shouldn't have been sold like that; they should have tested it on a timegrapher.
^ This for a high end timepiece from a reputable jewellers, not to have bothered checking accuracy is shoddy at best. If it was seconds out or within spec then forgivable but 7 minutes in 24 hours? No.
^ This for a high end timepiece from a reputable jewellers, not to have bothered checking accuracy is shoddy at best. If it was seconds out or within spec then forgivable but 7 minutes in 24 hours? No.