REPUBLIC v. ACCRA CIRCUIT COURT; EX PARTE APPIAH Evidence—Admissibility—Relevancy—Exclusion of—Relevant evidence admissible—Probative value of evidence can be assessed only after admission—Tender of relevant documents—Whether document to be excluded when overall scope of case unknown—Rationale of NRCD 323, s. 52—No evidence of  waste of time by prosecution or surprise or specific harm caused to A by tender—Whether court rightly exercised discretion in admitting documents in evidence—Evidence Decree, 1975 (NRCD 323), s. 52 (a) and (b).