I agree that it is difficult to see what is there, but it looks like a 1/8 monopole vertical and a single horizontal 1/8 wave radial.
There has been some work by K2AV on folded radials and some have made that a single one.
DJ0IP published an article with one elevated radial for 40 meters and he said it might work at 160meters
https://www.dj0ip.de/begin-here/The bottom line is that the elevated radials must not be directly connected to an earth ground to prevent this thing from becoming a dummy load because you will expend most of the energy exciting the earthworms under your vertical. The radials are also resonant- while traditional radial fields are not.
Read K2AV articles online for details or get them from people copying his work. It requires a special matching- isolation transformer and high power might be difficult.
Bottom line- anything possible in simulation, but reality is less kind and that means that the best approach is 16 or more radials of at least 1/8 wavelength and fir bet performance, make that 40-60 at over 0.2 wavelength.
Ironically, fewer radials will give higher input impedances because ground losses provide a kind of perverse and wasteful matching network.
Sevick found out that a short vertical also performed best if it had a large top hat capacitor and top loading plus a good ground radial field. He was successful because he used these principles. His work is required reading for anyone building any kind of vertical low band wire monopole or inverted L antenna.
Here is one of those articles. Jerry also published an entire book on the subject.
http://www.arrl.org/files/file/History/History%20of%20QST%20Volume%201%20-%20Technology/QS03-73-Sevick_opt.pdfAnother prolific writer on this subject is Rudy Severns. Here is one of his articles.
https://www.okdxf.eu/files/short-160m-verticals.pdfSee Rudy’s references at the end of the article for more work in this field.