The great majority of mainforce lancs did have a top turret,I have never seen a photo of a main force lanc without one.
What bullshooter 45 was posting was that the majority of lancs were field modified to remove turrets because of load carrying/performance shortfalls...which is patently nonsense !but then he kept trying to use wiki as a primary source anywayl LOL.
As I posted previously - the photo he posted of a lanc without a top turret was PA474 taken over lincoln in the 1970's
rgds lr