Ah interesting ! This particular watch has the pin/collar bracelet system. The serial number starts with 7708, would love to know what that might mean in terms of production year!
That is an early one then. 77.08m suggests to me more like 2001 +/- 1 yr based on the serials I have seen and watches I have owned. Maybe some other owners with 3570 Speedys will be along to give you other data points.
congrats.those are signs of natural and ordinary wear and tear, all in all still in mint condition, as long as there is no intentional alteration like over polishing, reluming, redialing, etc.. you've got your best choice and enjoy it to the fullest til your next speedy.馃榿馃槈
