Its a fairly accurate clone of the Model F77. I think the smaller one's a clone of an F62. There were at least 6 different versions of the Model F of different sizes, including a standalone numpad/macro pad. Its admittedly confusing that its called "model F" when there's more than one model. I think the F77 is believed to be exceedingly rare. Same goes for Model M, there were lots of variations made by IBM.
Here's an article that shows an original F77 that someone was working on restoring. If you're ever looking for information on obscure vintage keyboards and all of their variants, the deskthority wiki and forum is probably the best place to start.
According to Chyrosan (probably the most well known vintage keyboard collector/reviewer) the new ones are one of the only times he's seen a clone have better build quality than the original. The keys do feel very slightly differently but that's not necessarily a bad thing. Some prefer them to the old and vice versa.
Here's an article that shows an original F77 that someone was working on restoring. If you're ever looking for information on obscure vintage keyboards and all of their variants, the deskthority wiki and forum is probably the best place to start.
https://deskthority.net/viewtopic.php?t=22176
According to Chyrosan (probably the most well known vintage keyboard collector/reviewer) the new ones are one of the only times he's seen a clone have better build quality than the original. The keys do feel very slightly differently but that's not necessarily a bad thing. Some prefer them to the old and vice versa.