Hey Volvadi,
Referring to your recent post on the acquisition of a (I recall very pricey) Bahco No 69, I have found a missing element in the progression from early to recent.
This one (I just bought it) does not have the Pat number on it, but it has the older style No 69 and drop forged steel, and would have been produced sometime between your oldest and your second oldest. Check it out.