Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
O& O2 O3 O4 O5 O6 O7 O8 O9 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OO OP OQ OR OS OT OU OV OW OX OY OZ
OCA OCB OCC OCD OCE OCF OCG OCH OCI OCJ OCK OCL OCM OCN OCO OCP OCR OCS OCT OCU OCV OCW OCX OCY
OCGC OCGL OCGM OCGR OCGT OCGU OCGX
1 OCGX Ohio Cities Gas Co. (The Pure Oil Co.) 8/1920   NAKINA
2 OCGX PURE OIL CO. [OHIO CITIES GAS CO.]     PWRC