What 2100lb bomb is this a mock-up of in the mock up TSR-2 bay?

[GottJäger]

 

[NMaude]

Judging by its' shape especially the tail-fins it would appear to be a B43 parachute-retarded thermonuclear bomb

 

[Trident]

Looks like a US B43 thermonuclear bomb.

 

[TsrJoe]

Mk.43 mockup

 

[TsrJoe]

Mk.43 training round, RAFM. Hendon, 2008

 

[Apophenia]

Source: TSR2 With Hindsight, AVM A. F. C. Hunter, CBE AFC DL (Ed.), Royal Air Force Historical Society, Northampton, 1998

 

[uk 75]

Relevant to this thread as TSR2 would have replaced them assigned to SACEUR, do we have images of B43 loaded Canberras and Valiants, either photos or drawings?