Thanks rusty. I appreciate the response. I do know the years which Dressler owned SK. I am wondering if these wrenches are 60's, 70's, or 80's.
I am also wondering if these are worth more (to a collector) because they are still in original packaging. I purchased these from a retired SK salesman who worked for SK during these years.
I have a 7pc set of these 5/16 to 11/16.