Considering the layout and what I can see of the keycap profile it may be mechanical. I know some of the Amiga layout (with the Big Ass Enter key) boards had Cherry MX switches. There were also some rubber dome OVER sliders boards, Mitsumi mechanicals, NMB Hi-Teks and some standard rubber domes. So it's hard to know without seeing what the top of the switches look like under those keycaps.
If it's a board you're considering buying, ask the seller to pull a keycap so you can see the switch type before commiting to a purchase.