WRUW Today?

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Thanks for the hint on the case maker. I have long been of the opinion that the 9-karat bezel was made in England, likely because the Swiss wouldn’t make it in 9-karat. And that the 10-karat case back was made in Switzerland. What I find baffling is that there is no English hallmark in the case back, and the letter B doesn’t appear to be an English date letter.

The Swiss permitted a nine carat marking on Swiss made cases bound for the British market. Both the case back and case head of your Rolex carry the mark....I am more puzzled by the ten carat designation on the case back, but I am no expert.

The double opposing "FF" hallmark on your case back is that of the Glasgow assay office. The letter "B" is, I believe, the Glasgow date letter for 1950. However, the Glasgow assay office did not change its date letters on the calendar year. Rather, the Glasgow assay office date letter year runs July 1 of one year to June 30 of the next. As such your watch could be either a 1950 or 1951. Here is an image of the Glasgow assay office date letter for July 1, 1950 to June 30, 1951.
 
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Just to add, the double F is the Glasgow mark for imported bullion. The actual Glasgow mark is a tree/fish/bell
 
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Longines elegance and style 👍
ZQzPv2l.jpg
 
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Nearly done! Speedy timing the porridge for a late breakfast.



I really must try to improve my photos, this one is a bit grainy, apologies.
 
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M.C. today, seems to manage just fine living in harmony with his Rolex cousins 😀

 
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Truly love my new friend!

Now I need to find a flat Omega BoR!
Edited:
 
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Shhh...don't tell US Fish and Wildlife...but checking out my next strap! Location: Nubian village near Aswan, Egpyt.
Seiko SRPA21 on my right wrist because I was developing a bit of a rash on my left. Maybe the Helson's Sharkmaster 600's 316L SS, the other watch I brought with me, is not entirely up to standards!
Bonus points if you find the second crocodile in this pic! YaY!
 
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Shhh...don't tell US Fish and Wildlife...but checking out my next strap! Location: Nubian village near Aswan, Egpyt.
Seiko SRPA21 on my right wrist because I was developing a bit of a rash on my left. Maybe the Helson's Sharkmaster 600's 316L SS, the other watch I brought with me, is not entirely up to standards!
Bonus points if you find the second crocodile in this pic! YaY!

Perhaps a better look would be one on each shoulder 😉