If they are Alfa cams, the part number will tell. The Euro S2 1750/2l carb cams are 105480320001 (or 51). The Spica cams are, I think, 105020320001 (or is it 00 ).
Oh, poo. Seems I reversed two cam applications.Hmmm. I'm thinking late 1600 and S1 1750s for the 10520 cams.
I have a vague memory that there is also some variation in some 105480320001 cams. There are the ones as installed in S2 1750 and 2000 105 cars (and also early 1800 Alfettas) and ones installed in later 2 L 116 cars. They were both numbered the same, but the early ones had 10.1 mm lift (measured off the base circle) and the later ones had only 9.8 mm. Here in Aus, all 116s had 105200320000 up until about 1984 when they went to the 9.8 mm 105480320001 until the nord engine was discontinued when out emmision standard ADR 37/00 was introduced.
I could be wrong, but the moral is: not all 10548 cams are equal.