Oval Link GMT Jubilee bracelet

[TimeLord2]

My GMT 1675 root beer has an oval link USA bracelet. I was hoping someone has more information regarding these particular options. The watch was purchased in the USA at Tiffany, Beverly Hill (no Papers, in case you are wondering) and has a serial number of 3.2 mill making it plus or minus circa 1972. The charts I have seen don't even mention the USA or hecho in Mexico versions. I recently had the bracelet overhauled by Rolliworks so it has been refurbished (one of the pics I included is the before shot) but thought there must be more information on this topic concentrated in someones head on this particular forum. Anybody? Beuller, Beuller, Beuller...