1906 Portland Gold Mining Stock Certificate signed by Frank Peck. The Portland mine was the largest pre-1900 gold producer in Cripple Creek with revenues of over $8 million. Frank Peck, a savvy mining businessman, was an early investor in the Portland mine and the Black Diamond claim in Cripple Creek, eventually making him a millionaire. (Cripple Creek gold mining created roughly 30 millionaires). Classic scripophily certificate with vignette of underground miners. VF+ condition.