1958 is my birth year, and I was looking for a nice Eterna Kontiki from that year since a few month.
Finally (thanks Bill) I found what I believe it's the best vintage kontiki I ever saw.
Never polished 36.8mm case, stunning glossy original dial, yellow gold markers, case-back with clearly visible raft and serial number, 1414U movement. Original Gay-Freres bracelet marked 2-58. If it wasn't for the oxidized hands, it would look just released from the factory instead of being 54 years old. The crown doesn't have the 5 balls so probably it's not original but I found a nos one that I will replace as soon as it arrives here.
My watchmaker just did a complete service and cleaning, replaced the crystal and the ball-bearing (it was a bit loose) and brought back the bracelet to its original (bi-tonal) blaze.
Here is some pic for your review: