I recently saw a 14.5x114mm API cartridge on one of the online auction sites. The cartridge was listed as WWII Soviet, but the headstamp is “58” at 12 o’clock over “41” at 6 o’clock. I beleive the seller is reading the headstamp as Factory 58 made in 1941. According to my 14.5 headstamp checklist, this is actually a Chinese headstamp. The checklist shows Chinese factory “41” having the year at 12 0’clock and the factory code at 6 o’clock from 1956-1959. From 1960 onwards, the factory code “41” appears in it’s normal 12 o’clock position. I politely told the seller that I beleived that his description was in error and why, and was rudely told I was wrong. Am I wrong? Is this checklist that was compiled by advanced collectors in error? Is there a WWII Soviet factory code of “58” that made 14.5x114mm cartridges in 1941?