Okla. Stat. tit. 13, § 13-134: Precious metals and other valuables - Liability for loss

or injury - Notice of nature of freight.

A common carrier of gold, silver, platina, or precious stones,

or of imitations thereof, in a manufactured or unmanufactured state,

or timepieces of any description, of negotiable paper or other

valuable writings, of pictures, glass or china ware, is not liable

for more than Fifty Dollars ($50.00) upon the loss or injury of any

one package of such articles, unless he has notice, upon his receipt

thereof, by mark upon the package or otherwise, of the nature of the

freight.