Defendant contends in his first assignment of error that Archie L. Hargett was not competent to testify as to the contract of insurance between defendant and Northwestern Insurance Company. He argues that the only witnesses competent to testify as to the contractual relationship between defendant and Northwestern are Northwestern or its agent, Strickland Insurance Brokers. His rationale is that Mr. Hargett as broker of the policy had no authority to act as agent for Northwestern and thus, absent the intermediary agent Strickland, Mr. Hargett had no power to procure an insurance policy with Northwestern. See G.S. 58-39.4(b). We hold Mr. Hargett was a competent- witness to testify about the insurance contract. As a general rule, non-expert witnesses are competent to testify as to facts within their own knowledge and observation. Peterson v. Johnson, 28 N.C. App. 527, 221 S.E. 2d 920 (1976). It was not necessary that Mr. Hargett have the authority to contract directly with Northwestern, vis a vis, the power to broker the policy in order to be a competent witness. Mr. Hargett had first-hand knowledge of what property was to be insured; that Strickland had bound coverage with Northwestern, and in fact, had received a broker’s copy of policy BOP 3072 issued to defendant by Northwestern. Testimony given by Mr. Hargett relating to the insurance contract did not extend beyond his personal knowledge and observation of the facts so as to render his testimony incompetent or hearsay.

Defendant next challenges the introduction of State’s Exhibits 1, 2, 3, 4 and 5 on the basis that their admission into evi*205dence violated the best evidence rule. He contends that it was improper to admit the exhibits, which were photostatic copies of the original documents, without first accounting for the failure to produce the originals. See State v. Anderson, 5 N.C. App. 614, 169 S.E. 2d 38 (1969). We hold that the best evidence rule is not applicable to the admission of exhibits in this case. It is well settled that the best evidence rule does not apply “to writings when their contents are not in question or when they are only ‘collateral’ to the issues in the case . . .”, 2 Stansbury’s N.C. Evidence, § 190 (Brandis Rev. 1973). The contents or terms of the exhibits introduced were not in issue in this case as would be necessary before the rule could properly be invoked. The State sought to prove: (1) that the defendant had entered into an insurance contract with Northwestern providing coverage for a certain boat, motor and trailer, exhibit 1, broker’s copy of the insurance policy; (2) that a claim was made upon this policy for the loss of property insured under the contract, exhibit 2, police report, exhibit 3, claim form, and exhibits 4 and 5, proof of loss; and (3) that the claim made was false. The terms of the insurance contract, police report, claim form and proofs of loss were not in controversy. The matters sought to be proved by the writings were collateral to the contents or terms of each document and therefore, the nonproduction of the original documents was excused.

In his third assignment of error, defendant asserts that he was prejudiced by the exclusion of testimony relating to the existence of civil litigation filed by him against Northwestern. On cross-examination, defendant asked E. C. Dean, a Northwestern claims adjuster, if he recalled the attorney for defendant saying that he would institute civil suit against Northwestern. The State objected to the question and the objection was sustained. The record does not disclose what the testimony would have been had Mr. Dean been permitted to answer. Even assuming that the question propounded by defendant on cross-examination was proper, we are not allowed to go further and predict what response the witness would have given. We cannot hold that the exclusion of evidence is prejudicial where the record does not show what the testimony would have been had the witness been allowed to answer. State v. Poolos, 241 N.C. 382, 85 S.E. 2d 342 (1955); State v. Robinson, 280 N.C. 718, 187 S.E. 2d 20 (1972).

*206Defendant also objects to the testimony of a boat repairman, William Armstrong, on the grounds that questions directed to Mr. Armstrong concerning the appearance of serial numbers on the trailer called for conclusions or opinion testimony by a non-expert witness. Mr. Armstrong testified that the numbers appeared to have been double stamped and that the second number 6 appeared to have a ball peen hammer mark. We hold that the testimony of Mr. Armstrong was properly admitted. Lay witnesses may give opinions in the form of shorthand statements of facts observed where the facts on which the opinion was based cannot practically be described so that a jury can understand them and draw their own conclusions. 1 Stansbury’s N.C. Evidence, § 125 (Brandis Rev. 1973); see Steele v. Coxe, 225 N.C. 726, 36 S.E. 2d 288 (1945); Peterson v. Johnson, supra.

In defendant’s seventh and eighth assignments of error, he contends that it was improper to admit the testimony of K. W. Duncan, Vice President in charge of claims at Northwestern, relating to the insurance contract between defendant and Northwestern, and that the court further erred by admitting exhibit 19, cover sheet of Boat Owner Policy 3072, and exhibit 20, a standard Northwestern Boat Owner Policy. We disagree. Defendant argues that Mr. Duncan is incompetent to testify about policy BOP 3072 since he (Mr. Duncan) had no authority to issue or approve insurance policies. Mr. Duncan’s competency to testify does not depend on his power to contract. Mr. Duncan testified that he was familiar with and had access to the records of the insurance company. We find that a sufficient nexus between the witness and records was shown for Mr. Duncan to testify that policy BOP 3072 insured a Chrysler boat, Mercury motor, and Moody trailer. See State v. Branch, 288 N.C. 514, 220 S.E. 2d 495 (1975); State v. Lippard, 222 N.C. 167, 25 S.E. 2d 594 (1943). Defendant again relies on the best evidence rule in contending that exhibit 19 was improperly admitted by noting that no accounting was made for the State’s failure to produce the original. The best evidence rule does not apply where no showing is made that the terms or contents of a document are in controversy. See 2 Stansbury’s N.C. Evidence, § 190 (Brandis Rev. 1973). As to exhibit 20’s introduction into evidence, defendant contends that the policy has no relevance to this suit because it is simply a form of a standard Boat Owner’s Policy. He further contends that no foundation was *207laid for the exhibit’s admission into evidence. Defendant’s arguments are specious. Mr. Duncan testified on direct examination of his familiarity and access to company records. He also testified that Northwestern had only one type of boat owner policy, and exhibit 20 was the same or similar to policy BOP 3072. We hold that an adequate foundation and relevance was shown for the admission of exhibit 20 into evidence.

This Court has thoroughly examined the defendant’s remaining assignments of error and we find no merit in any of them. We hold, therefore, that defendant has had a fair trial, free from prejudicial error.

No error.