Thank you, Peacoat. I also plan to compare the button holes of this Zumwalt coat to the button holes on my nineties Sterlingwear this weekend. Hopefully, modern anchor buttons will work. The fit of the 38L is much better through the shoulders.1976 was the year the Zumwalt buttons became mandatory, having been phased in since 1974, if I remember correctly. The Zumwalt "pewter" buttons were required until 1984 when the larger fouled anchor buttons returned to service.
My initial reaction was that with this much swapping of button types and sizes, the button holes would fit both buttons. But I thought I should do a bit of testing. I went to my button drawer in the bedroom and grabbed, in the dark, the first buttons I saw (my wife was a bit ill and had gone to bed earlier).
When fitted through the button hole of the pewter button hole coat, the fit was tighter than I thought it should be. I looked at the button and it was a WWI button. Evidently they are a bit thicker than the modern buttons, being made of Bakelite and all.
So, back into the bedroom I went. Had to turn on the light, which was not popular with my wife. Had to explain what I was doing. She wasn't impressed. Found the modern buttons and got out of the bedroom as quickly as possible. The fit of the fouled anchor button into the pewter button hole is a bit tight, but certainly manageable. I would say the button holes are about the same size.
My micrometer, which will give an exact measurement of the two button holes on the Zumwalt coat and the pre Zumwalt coat, is in my shop in the garage downstairs. After all of the above, I don't have the energy to go down and get it tonight.
If I can remember to do it, I will get the micrometer and make the measurements tomorrow. If I don't remember, someone can post here and remind me.


