It is a replica of Cherry doubleshot or dye-sub.
If you are lucky, you could find a original Cherry G80-3000 or G81-3000 keyboard with doubleshot keys on eBay. It would give you all keycaps except the Caps Lock, which is centre-stemmed on only one or two rarer keyboard models in the G80 and G81 series.
(I would be surprised if the GH60 keyboard did not support offset-stemmed Caps Locks though, if that is what you want to put the keys on)