Looking for a year made on a Copley Slip

Today on one of my thrift store scavenges, I found a beautiful slip. It is made by Copley. The label bears this information: Short Size 38 Copley "A Proportioned Slip". The back of the label says: 100 % Nylon Shadowproof. The bottom has the Union Label for ILGWU the bottom half is worn, but I think it is AFL-CIO. I have tried searching for Copley slips online and have found nothing. Has anyone encountered this particular brand or have any information about it? Thanks so much! I am new to the group and excited to further my vintage knowledge.
Megan Graves

 

You should post pictures! : ))))

 

Here are some pictures!! It caught my eye when I noticed the seams, so I checked the tag and bought the slip for a 35 cents!

 

Thanks so much, Linn! I live in Mississippi so there is rarely any good finds within thrift stores and then finding them takes a lot of searching. It is beautiful and I am glad to know that it is that old!