Greetings all.
I recently acquired a moderately old Benrus 3-Star Automatic wristwatch. It's a #7026 Series.
I believe these are from the 60's - though I don't know much about them.
On the back of the case it says "open through crystal". Which makes me think that the Crystal should be removed using a Crystal Lift - and the movement lifted out through the bezel.
Of course, the stem (presumably two-piece) would have to be separated prior to - or during the operation.
BUT -