I have good news galore. I got the call yesterday that the clasp I ordered was ready to be picked up. I dropped by earyl this morning with my Speedy Pro and handed it over to the OB's watchmaker. Unfortunately I was seated away from him, so I didn't see exactly what he did, which will become more important later.
The good news is that it fits the 3861 bracelet, the great news is that it is a perfect fit in terms of width compared to the bracelet! And the fact that the price was only CHF 200 was just the cherry on top. Even the SA was surprised seeing that apparently a simple pin buckle from a different model already cost CHF 250.
Anyways, there was a couple strange things which made me regret that I didn't see what the watchmaker was doing. First off, as you can see from the pictures below, the Chronoscope clasp (in all pictures the one attached to the bracelet) is slightly longer than the original clasp. When I came in, my 3861 wore slightly loose on my wrist. After the clasp was switched, with the new clasp not set to the extended setting, the watch fit tighter than it did on the old clasp. Yet the watchmaker assured me that he did not remove any links.
Another weird thing is that as you can see on the receipt at the bottom, there are two serial numbers for two parts. And the SA confirmed that there was indeed the clasp and an "attachment piece". As the watchmaker was gone at that point, I wasn't able to get a clear picture on what part the attachment piece was exactly. Also, for some reason the SA told me that they were not able to give me the plastic baggies that held the original parts. As you may know, these show the serial numbers on them. I've purchased parts from them before, and it's the first time they withheld the bags.
Anyways, the watch now fits me better than before, and I am glad to have a quick extension for those hot days when my wrist swells later in the day. I was also able to handle the Chronoscope and the Seamaster 300 while I waited, and both are great looking watches!
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