Bulova 1964 Canadian Clipper

Before I get into the story of this watch, let me lay out what I know, because I find the combo to be quite puzzling:

• Serial Number = H187570
• Case Date Stamp = M4 (1964)
• Case Style = Most similar to the American Clipper, 10k RGP
• Movement = 11AFAC
• Jewel Count = 17
• Movement Date Stamp = M5
• Dial = Two-tone silver sunburst with alternating numerals and markers. (It does not have the open-ended "curly" six that I have seen on most sunburst dials, but rather a closed one.
• Condition = Aesthetically pretty good. The lume has discolored and no longer works, and there is some oxidation on the minute and hour hands. There are some deep scratches on the crystal. The watch runs well, but the power reserve is quite depleted. If it is not wound before bed, it will likely stop overnight, despite being worn all day. (~10hr reserve IMO). The band was replaced by me since the band I got with the watch was crumbling apart. The movement was not cleaned by me, and the pictures show exactly what I found when opening it for the first time. Case o-ring looks to be crumbling.

From my research so far, I have struggled to find a watch with this exact combination. I am inclined to believe that this is a Canadian market variant of the Clipper line, rather than a franken-watch. The main reason that I believe this is because this watch was inherited from my grandfather (Canadian) who, I was told, bought it new back in the day. My grandfather was not a notorious watch collector, and led a very modest life as a farmer. He was not the type to customize or modify his watches. The watches that he did own tended to be very utilitarian and inexpensive, which leads me to believe that this would have been his one "dress" watch for special occasions. He was known to take very good care of his belongings, and I believe this watch is a strong example of that. As far as I can gather, this watch may not have been serviced in well over a decade, possibly ever. There are no clues (witness marks, chips, scratches, etc..) that would suggest to me that it has been serviced. Besides the slight oxidation on the hands, I have no obvious indication that moisture has entered the case.

Unfortunately both my grandparents are have long since passed (>10yr), so gathering more information about the watch may not be possible.

I plan to have this watch serviced to mechanically restore it to its former glory, while leaving the patina on the hands and case as an homage to my grandfather. I do plan on replacing the crystal to restore readability.

I look forward to hearing your thoughts, and I hope that someone will find this as interesting as I do! Thanks in advance!