Can anyone identify this vision block??

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jimk

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Greetings,
Can anyone identify this vision block?? (what it was used on and where (ex: M48, M41, driver, turret ...)?
Thickness suggest heavy armor. Date suggest Vietnam era. I would like to know what it is before I put it on ebay. Thanks, Jim

Inside (overall) 7-1/8" x 2-3/4"
Outside (overall) 10-7/8" x 4-1/8"
Width - about 5-3/4"

Markings
11594243
LOF
9/69
 

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Sikorsky502

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Goes to a couple of different vehicles. M114, m901, v100 comes to mind. It’s a vision block for a turret.
 

jimk

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It's a lot thicker than a V-100 vision block. About twice as thick. This block has a 1969 date. The M901 first entered service around 1979 or 80. It is possible the 901 (or other more recent vehicles) use the same block that was in use earlier. I dunno. I would like to know what vehicle it was intended for at the time it was made (I.e. what it was made for). I would agree that a turret seems more likely than a hull. I just spent an 2+ hours looking at old photos and most of the of tracked vehicles hulls in the late 60's used periscopes. The M48 cupola may use periscopes as well (I could not find a good picture). The M113 turret pictures of that era show Cad Gage T-60 turrets. These are the same as the V100. The XM734 had 4 blocks in side of the hull. Maybe that? But then the ballistic protection across 114/113/V100 was similar so this thicker block would seem to be for something with better protection.
 

frank8003

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1005-01-528-3125 (11594243) Data
1005-01-528-3125 (1005015283125) NSN Information
NSN FSC NIIN Item Name INC
1005-01-528-3125 1005 015283125 Block Vision 77777
1005-01-528-3125 Features
MRC Parameter Characteristics
AGAV End Item Identification Tank VCC1
CXCY Part Name Assigned BY Controlling Agency Block, vision, bullet resistant, metric
MATT Material Steel

https://www.google.com/search?num=20&source=hp&ei=FudqWsTnA8WZzwKGtruICA&q=tank+VCC1&oq=tank+VCC1&gs_l=psy-ab.3..33i160k1.2044.5790.0.8898.10.9.0.0.0.0.97.699.9.9.0....0...1c.1.64.psy-ab..1.9.699.0..0j0i131k1j0i22i30k1j0i22i10i30k1.0.bKnUVoH_hgI
 
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