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This internal frame rucksack appears to be a based on the Berghaus Vulcan design. The exact product number is unknown.
Size:
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Sides:
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The sides have plastic zippers zippers that can be zipped together to compress the contents.
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There might have been side cylinders that zipped on like the original Vulcan rucksack, but those were not found with this particular item.
Top:
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Meaning of white markings is unknown, but possibly for nighttime visibility like “Cat’s Eyes” or “Follow Me” markings on the back of some US Army headwear.
Bottom:
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Lid:
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Tag:
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London Bridge Trading used the “silver label” tags (with grey/silver lettering) throughout the 1990’s before changing to the more famous “gold label” with yellow lettering.
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Inside:
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Frame:
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Non-removable X-frame made of aluminum.
Sternum Strap:
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Sternum strap buckles are dated 1994.
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Superloc Slide Buckles:
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Superloc slide buckles used to attach the shoulder straps are dated 1992.
Waist Belt:
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Waist belt buckle is dated 1994.
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Usage Photo:
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US Navy SEALs used the Berghaus Vulcan in the late 1980’s – 1990’s. No pictures of the exact type of LBT rucksack on this page have been found yet.