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B&L Civilian Mk28, I think.

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#1 zombie1210

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Posted 01 August 2020 - 06:37 PM

I have these coming to me next week. Made in 1945, I think they are the civilian version of the Mk28. They don't have a Mk number on them. Just BU and the serial number. They look amazingly clean, and come with the Hood case and strap. I'm excited to finally own a B&L from this era.

 

How well should they work for astronomy?  What should I expect?

 

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#2 SMark

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Posted 01 August 2020 - 07:50 PM

That will be great for astronomy. In its day it was a top notch alpha bino. A civilian Mk 28 would be a pretty correct description.
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#3 zombie1210

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Posted 01 August 2020 - 07:52 PM

I think I remember someone who referred to them as 7x50 "Navy Glass" as well. 


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#4 Pinewood

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Posted 01 August 2020 - 10:50 PM

Hello Zombie,

 

Bill Cook has already suggested to you that it was a Mk 28 with generic prism plates.  It might have been part of a contract cancelled at the end of WWII with the prism plates changed to civilian ones but the Hood case is very U.S. Navy.

I have one, made in 1943.  On the starboard prism plate is the Navy inscription in whitened engraving, specifying the model . If memory serves me correctly, in 1985, I spotted Titan with it,  a sighting confirmed by the Haydn Planetarium.   Although, I could be confusing it with my 7x50 Leitz Marseptit, which I owned at the same time but both are serviceable .  It should work best in dark skies but even in light polluted skies, the Galilean moons should be apparent and various asterisms like the Pleiades and Orion's sword will enchant you. 
Your Swift Audubon might do better for astronomy but the Mk 28 should be easier to keep steady.

If you are the imaginative type, you might think what it may have been like to use such a glass in a Pacific battle.


Stay safe,
Arthur


Edited by Pinewood, 02 August 2020 - 08:02 PM.

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#5 RLoret

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Posted 01 August 2020 - 10:55 PM

Hello Zombie,

 

Bill Cook has already suggest to you that it was a Mk 28 with generic prism plates. It might have been part of a contract cancelled at the end of WWII with the prism plates changed to civilian ones but the Hood case is very U.S. Navy.

It has the embossed markings of the Mark 28, but not the Navy markings engraved on the right prism plate.  So I suspect that was sold by B&L using parts left over from contracts cancelled at the end of the war.  Or possibly it was delivered to the Navy but sold as war surplus before it was ever engraved.  You only see the B&L 7x50 in that configuration for 1945 and maybe 1946.  Postwar SARDs also show up sometimes.  I presume they are the Mark 44, but they also have no markings on the prism plates


Edited by RLoret, 02 August 2020 - 09:03 AM.


#6 SMark

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Posted 02 August 2020 - 02:25 AM

I have a number of post-war models. Some are difficult to ID. One is an Anchor Optical.



#7 Pinewood

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Posted 02 August 2020 - 07:10 AM

Hello Zombie,

 

I attach a list of U.S, Navy binocular models.   N.B. the source, Peter Abraham's site, was labelled as not secure by my browser.

 

Go down to the Mark 28 and look at the later ones made by B&L and decide if it is some other model. The Mark 28 was the most common.

 

Stay safe,

Arthur

Attached Files



#8 WALL.E

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Posted 02 August 2020 - 07:18 AM

Absolutely beautiful condition!

Great catch!

 

Pictured is my civilian model B&L "Navy Glass" so you can see the differences.

Mine is circa 1970 according to an esteemed forum member.

 

Eric

 

002_opt (5).jpg

 

 


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