gold bullion sample bar (bache) made by Johnson mathey and mallorey

Description

gold bullion sample bar (bache) made by Johnson mathey and mallorey. From what i can find, there were two to very few of these sample bars made and they never went into production. It is stamped .9999 and gold color, but made of an unknown metal. Marked sample on the back side. I never had it checked, but i doubt it is made of gold. Could be silver or something else. Since it is so rare, i believe the historical value outweighs the metal.