Visual difference between 48 and 59 degree W2 heads?

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gzig5

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How do I tell whether a W2 head is 48 or 59 degrees just by looking at them? Can't seem to find any side by side pictures. Seems like a lot of people selling these don't have any idea what they actually have. I'm considering giving a set a try even with the expensive rocker gear but I need to find a decent set of 59 degree race heads first. I understand there are multiple chamber sizes and race vs econo rocker stands and I get all that.
 
I thought all of the 48* W-2 heads were closed chamber. I would think that the push rod holes would be able to tell also.
 
Like so

IMG_1651.jpeg
 
Thanks. Thats the pic that I was looking for but couldn't find.

I'm not sure about the closed chamber thing. The reason I was asking about the angle is a set on FB that have what look to be open chambers and are 48 degree as seen below. But the open chambers are probably only about 65cc? I remember reading about 47cc and 55cc closed chambers. Anyway, they won't work for me but now it will be a little easier to weed through the opportunities for me.

1736890049849.png
 
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