Alfa valve springs? The 4 on top in the 1st photo and the 4 on the right in the 2nd photo are the ones under suspicion. For comparison, a known pair of Alfa valve springs, inner and outer. The questionable springs are about as tall as the Alfa inner but about 24,5 mm in diameter, and they won't fit inside the outer Alfa springs. Alfa inners are about 3mm smaller in dia.