Okla. Stat. tit. 21, § 21-1413: Correspondence between instrument and merchandise

received.

No person can be convicted of any offense under the last two

sections by reason that the contents of any barrel, box, case, cask

or other vessel or package mentioned in the bill of lading, receipt

or other voucher, did not correspond with the description given in

such instrument of the merchandise received, if such description

corresponded substantially with the marks, labels or brands upon the

outside of such vessel or package, unless it appears that the

accused knew that such marks, labels or brands were untrue.