Mackaydon said:Yes, 1776 Carlos III 1/2 real if 18mm diameter or 1 real if 20mm.
The "A" that is legible is the last 'a' in GRATIA; as in Dei Gratia. The coin is .9027 fine silver.
If you wish, turn both images 90 degrees clockwise for proper alignment (O: date on the bottom R: left pillar vertical)
Great saves !!
Don.....