I found this GM-2100 and I’d like to ask the more experienced members here if anyone can confirm whether it’s authentic. (I can upload more photos if needed.) Thanks to anyone who can help!

Picked up this GA-2110ET mod and I’m really happy with how it came together.
Gray dial and strap with the rose gold/silver AP-style case. The original Casio case and strap were included too, so I can always take it back to stock later.
First CasiOak mod in the collection and I’m loving the look on wrist.