Hello sir, i have a relly old kintiki's like yours ... how much it worth?You can find the movement number under the balance wheel which will be something like 14xx ( the higher the number the later it is ) followed by a U or K or UD. Yours will probably be K which IIRC means 'date', and I reckon it's a late one so maybe 1489K? The movement on yours looks nice and clean, but ( and I may be wrong! ) I think your dial has been played with. The hands are probably original, but the typeface on 'ETERNA View attachment 582680 MATIC' is wrong I think. Also the case looks like it may have been refinished, although the crown looks original. If you look closely at the very centre of the crystal, you may find the 5 balls Eterna logo embossed - this would mean it has the original crystal.
I really like the Kontiki's, I have two. The one on the right is the 36mm - 1489K. You can just about make out the embossed logo on the crystal on the 34mm on the left.