This one is a fantastic Pseudolobivia (now treated as Echinopsis) hybrid by Andreas Wessner called 18a/2000. The flowers have these nice pink stripes in center of the petals. Very nice and also a great parent in hybrid crosses.
Since Andreas Wessner does often not publish the parents of his crosses, I do not know which parents are involved here. Very clearly, one of them must be an Echinopsis obrepanda like hybrid and that one came very strongly in the body. It’s a classic Pseudolobivia like body (now included in Echinopsis and this one would probably count as Echinopsis obrepanda hybrid, simply based on the body). I also have offspring of it that ended up being world class, so this is a really good hybrid.