We think this is probably a fan blade for a Petrol engined Series 2, 2a or 3. All we can add is looking down on the fan blade directly from above, the overall shape os sort of rectangular - if that's any help!
Land Rover Series 2 2A 3 2.25 Diesel Series to Parallel Glow Plug Upgrade DA1057
Footwell Floor Fits Land Rover Series 2 & Series 3 LHD DA4869LHD BRITPART
Land Rover Series 2 Series 3 RHD Bulkhead footwell repair panels with ribs PAIR
Land Rover Series 2 Series 3 RHDBulkhead footwell repair panels with ribs PAIR
Land Rover Series 2 Series 3 Gearbox tunnel to Bulkhead 330069 4 cylinder
Land Rover Series 2 Series 3 Bulkhead Gear box tunnel to Footwell 4 cylinder