Hello Christopher,
Thank you for your comment on my book
The first tank with the 68.600 plate was damaged in an accident with another tank. The other Leopard was apparently not more damaged than it was reasonable to repair it.
There are two variants of the LEO 1ARV in service with the Danish Army. The original version and the upgraded version called "Wisent", upgraded by FFG in Flensburg, Germany.
Regards Thomas