Size unknown. I believe it is the .5 fl oz (15ml) size, but please research to your own satisfaction prior to purchase.
The cap is 'out of round', but still fits on with no problem. Also, it has a ding/divot to the edge, and some superficial scratches.
The label has some bubbling and light scratches.
See last 4 pictures for issues noted.
Please see pictured fill level to determine usage.