We could exclude saxicola, because the flowers are different. Reppenhagen says about vagaspina: 3-6 radial spines, the upper one, when present, very short, 1-5 mm long. Central spines: 1-2, mostly 2, 5-50 mm long, the lowest the longest, glassy yellow to grey with darker tips. Flower: white to brownish, or carmine to pink carmine, 20-22 mm long and wide
And now an idea of mine, I was thinking on bucareliensis. According to Reppenhagen: 0-5 radial spines, tyhe upper one the shortest, 0,5 to 5 mm long, glassy yellow with brown tips. Central spines: 2 - 4, mostly 2, 5-40 mm long, the lowest the longest, glassy yellow with dark tips. Flower: Carmine, 20 - 24 mm long and 16 -18 mm wide.
It is probably one of these two forms.