Vintage 1960s Black Dress With Leopard Print Buttons Collar TLC

Here for your consideration is a chic 1960s dress with leopard print collar and button. There is no label. The dress feels like a sweater like poly knit. It has a metal zipper on the back. I am selling as a TLC piece because the buttons are safety pinned on and the collar is pinned to lay flat. I would estimate this to be a M/L based on the measurements. Here are the measurements with the dess flat and taken from one side. Shoulders 16" arm pit to pit 19" hips 20" length 40". There are no holes or stains aside from the button and collar issues. The collar is attached but just pinned down to lay right on the front with the pins. Sold as found for repair.