The Supreme Court in Omega Bank (Nig) Plc v. O.B.C. Ltd. [2005] 8 NWLR (Part 928) 547 at 587 Paragraphs C – D per Tobi, JSC (as he then was) the Apex Court held inter alia that: “… It is my view that where a document is not signed, it may not be admitted in evidence. Even if it is admitted in evidence, the Court should not attach any probative value to it. This is because a document which is not signed has no origin in terms of its maker….at page 582 Paragraph A, His Lordship, Tobi, JSC of blessed memory further emphasized that:” A document which is not signed does not have any efficacy in law. As held in the cases examined, the document is worthless and a worthless document cannot be efficacious…”
RELEVANCY GOVERNS ADMISSION OF EVIDENCE
When it is a question of admission of evidence, strictly, it is not whether the method by which it is obtained is tortious but excusable, but whether what has been obtained is relevant to the issue being tried. See Kuruma v. R. (1955) AC 197.
— Ogwuegbu JSC. Oshunrinde v Akande (1996) – SC.110/1990