Searching for OG of thirfted photography series

I found those at market in Germany. They are out of a photography series of supposably ~15 "photos". The lady at the market did not know much about the origin. She said is it from an south african photographer and those are pictures of flowers. The are also supposed to be developed in a dark room, so analog photography.

I was hoping someone might recognise the style or the quite distinctive signiture with the fingerprint and "Luca".

https://imgur.com/gallery/flower-photography-of-unknown-photographer-2AB3VbH