OK, what makes this a Type B?
system:
A11 Matilda I (type A
Here is the overview of the A11 Matilda I production batches in a direct comparison table:
Production Phase
Front Stowage Box Design
Headlamp Position
Additional Details
Early Production (A.11.E.1 Style)
Low-slung, flat lids, unreinforced sides
Boxed-in, positioned directly beside or behind the storage layout
Based directly on the initial A11 prototype design
Mid-Production
Features a distinctive, stamped “X” reinforcement on the sides
Unchanged from early production layout
Minor structural upgrade for external durability
Late Production
Raised higher with a sloped profile matching the driver’s line
Repositioned forward, sitting directly ahead of the new boxes
Some units received field modifications like side-skirt track guards
I think the main different is the armament, first 7.7 mm and then 12.7mm.