I always get confused with all that stuff, 4.3 full frame letterbox says on the back. Watching it it's widescreen. Not a particularly great transfer but not too bad either, probably due to it being quite low budget.
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MIKE: I've got it! Peter Cushing! We've got to drive a stake through his heart!
VYVYAN: Great! I'll get the car!
NEIL: I'll get a cushion.