Your guide inspired me so much I decided I am going to do that as well.
Maybe your wallet wasn’t tampered, but mine was!
This is a great decision, as, in case it will turn out that it wasn't tampered, this information will reassure the others which also thought about this.
I'll be looking forward for your results. Be careful though and try to remember the place of each piece when you'll dismantle it. And be very, very gentle during the operation.
Even if I vaguely remember the Ledger App certified that as genuine.
Even if you saw this... you know very well that what a software says is not always accurate. Honestly, I trust more that fact that I see the PCBs identical than that command which confirmed the Ledger is genuine. In my opinion comparing the PCBs is more important in this check.