Large Banknote Secret Marks

1c
In the pearl to the left of the figure one is a small crescent
2c
Under the scroll at top left is small diagonal line
3c
The shadow of the tail on the upper tail at bottom left has been strengthened
6c
The first four lines inside of curve the left ribbon has been strengthened
7c
Two small semi circles are drawn inside the lower left ball where it meets the rest of the design
10c
In the ball at the end of the scroll, at top right, a semi-circle is drawn
12c
The balls of the figure '2' are crescent shaped
15c
There lower part of the upper left triangle is strengthened
(see below for further id provided by Chris Baisin)