Confirmed by my Russian friend- Factory named For Stalin Pavlov City.
She wonders where this wrench was found. It is a long way from home.
There is a story behind my Russian friend. She was a pen pal with my oldest son when he was in High School, but they had lost connection since then, until they found each other on Facebook. Now she and I interact much more than she does with my son. She has been a hospital administrator and lately had a small business that failed due to taxes and fees that ate her up.