Hi cbiscuit,
It is indeed a Venezuelan FN Model 24/30, is it still in original 7 x 57 mm, if you could measure the barrel length I can tell you which of the 3 models it is. The standard 24/30 Short Rifle was negotiated with FN in 1930 and the order placed for 16,500 during 1934 - 1935. Smaller orders to FN continued up to the second world war, with total quantities purchased unknown. I suspect it has been re-barrelled as the rear sight leaf is incorrect it should be marked to 2000 metres. Does the number on the bolt match the barrel number? If it does it would be one of the earliest made so 1934.
Information obtained from 5th Edition Mauser Military Rifles of the World
Dick