Thank You very much, Petr.
This is indeed a valuable information for my purposes.
My interest in Carriers grew considerably when i started working on my book.
At first glance, I was in doubt whether it was a Mk 2 or a Mk 3 because I couldn't see if the armour was riveted.
Only the position of marker lights led me to suppose that it could be a mk 2 mortar carrier but I needed a more qualified opinion.
Luigi