When Riga, the last of its satellite factories, was sold off in 1937 the unified factory code letters SBP were being put at twelve o'clock plus the quadrant at 6 o'clock ended up changed with the month of generation in Roman numerals (e.g., VI for June, the sixth thirty day https://damienkdzqc.blogerus.com/42006581/a-review-of-technical-specifcations-of-cci-primers