CMRQ-1
CMRQ-2
CMRQ-3
CMRQ-4
CMRQ-5
CMRQ-6
CMRQ-7
CMRQ-8
CMRQ-9
CMRQ-10
CMRQ-11
CMRQ is an abbreviation for California Minerva Round 1/4. Most CMRQ varieties are dated 1915, but the very rare CMRQ-2 is dated 1848, and the even rarer CMRQ-3 and CMRQ-10 are dated 1849. CMRH-7 is the most often seen variety. The others range from very rare to extremely rare.