Looks like a VVH44.
The (original) clutch master cylinder is more or less specific to Landrovers, so you need to get it from the dealer or by mail order, but the one fitted is the one fitted most commonly to override trailer brakes, and hence is available everywhere. Operationally there is no difference.
While the lwb Series 2a has fairly good brakes if in good shape, the swb brakes are less so - when I had an 88, in the 1960s, I fitted a VH44, and was very happy with it.
				
			 
			
		 
			
				
			
			
				John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
			
			
		 
	
Bookmarks