Steyr Barrel Questions?

[Winchester Cowboy]

I picked up a Steyr barrel with the Bo marking and 2 Steyr logos on it:
the Steyr W logo and the Steyr name logo.
There is one WaA 623 waffenampt, and a second WaA 749 (I think???, it’s so small and hard to read), and also what looks like a very faint eagle.
There is No serial number on barrel.

About what year would it have been made?

Why would it have 2 different Steyr logos on it?

Thanks.

 

[heavy_mech]

That was a 1941 change regarding those Steyr logos for their in-house finishing operations. This appears to be a 1942 produced item presumably for 'spares' that was never used during the war.

 

[swjXE]

After looking closely at photo B3F0 I can see the almost completely polished out Proof Eagle. This means it was installed on a rifle during the war. Is it drilled for the front and rear sight base screws?

 

[Muncher 1953]

After looking closely at photo B3F0 I can see the almost completely polished out Proof Eagle. This means it was installed on a rifle during the war. Is it drilled for the front and rear sight base screws?

good eye! but why no date code in the ‘Bo’ string?

 

[Winchester Cowboy]

After looking closely at photo B3F0 I can see the almost completely polished out Proof Eagle. This means it was installed on a rifle during the war. Is it drilled for the front and rear sight base screws?

Yes it is drilled for the front and rear sight base screws.
The rifling looks like new.

 

[swjXE]

good eye! but why no date code in the ‘Bo’ string?

Indeed! And why the Commercial Steyr Logo and 749 waff?
Could it have originally been intended for the G.12/34