Phrank. Congrats on a very nice example of a difficult to find watch. Can I ask you if the dial is flat or does it have a sunburst feature. It's a little hard to tell from your pic. This watch is a Longines Reference L4.686.4 with a 38mm case size. The movement is a Longines caliber L667.2 (the pic below shows you what's inside) which is modified Valjoux 7750 made by ETA. You'll know this by the friendly whirring sound and gyro like vibrations you'll feel when the rotor is freewheeling. It's one of the most unique and recognizable features of this movement. The family did a fantastic job to find this one. You should enjoy it for a long time. It looks sweet.
:beer1:
Attachment 239615