Thanks pakoriv for sharing the useful details from Evinsky's
sale posting of the BB58 with the Easylink!
So I bought a used
77200 Explorer I bracelet and it arrived today.
Step 1 Fit EasyLink on BB58 Clasp - It fit without any issue . Below are the pictures.
I can't do the next steps because I don't have a fitting screwdriver. Once COVID-19 is done I'm taking it to a nearby Watch Maker.
But I did some review on the next step,
Step 2 Filing Tudor Link Gap - Hopefully, I don't need to do any filing. When measuring (per pictures below), it looks like it should be a perfect case in my case.
Step 3 Enlarge the Tudor Hole for EasyLink Springbar - I'll call ahead to the Watch Maker to make sure he can do this.
Proof it fits!
BB58 Easylink Clasp 1 of 2.jpg
BB58 Easylink Clasp 2 of 2.jpg
Measurements seem to match, but I will let everyone know once I take it to the Watch Maker.
BB58 Bracelet,
BB58 Measure for Easylink 1 of 2.jpg
77200 Bracelet,
BB58 Measure for Easylink 2 of 2.jpg