|Metal Content:||100 troy oz|
|Manufacturer:||Omega M & B Mining|
These are extremely rare and highly sought after!
M & B Mining Inc was founded in 1969 in Las Vegas, Nevada and disappeared in the early 1970's. For many years the trademark was believed by collectors to have been a stylized Omega (the Greek letter meaning "all encompassing"). It is actually the letters M and B intertwined.