Looks like Machine Doubling. There are a lot of DDR's on this series, but they are in the trees most of the time.
http://doubleddie.com/217801.html
Note on these the extra trees come up from the fields or up into the design. On your coin the MD creates an incuse mark on that area. The DDR's are raised, not an incuse mark.
http://doubleddie.com/217801.html
Note on these the extra trees come up from the fields or up into the design. On your coin the MD creates an incuse mark on that area. The DDR's are raised, not an incuse mark.

























