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The bright circle under the Equitable's builders plate may not be a combination dial...
Attachment 19215
there are similar bright circles on the Remote Combination Viewers of these unidentified main and emergency vault doors:
Attachment 19214 Attachment 19213
It looks like the emergency vault door's bright circle has a key hole in it. Could this be a lock to prevent the combination dials from spinning or the to prevent the pressure system hand-wheel from spinning?
These are the only doors I have found with three combination dials on the RCVs.
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Mystery solved! I think...the 'bright circles' are probably the RCV light switches. I am making this assumption based on the pics I just received of the emergency vault door at the Philadelphia Federal Reserve vault:
Attachment 19216 Attachment 19217
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The first two pics are the only remote combination viewers I know of with triple combination dals.
Pics 1 and 3 show pressure bars running thru the crane hinge. All other pressure bars either run behind or in front of the crane hinge.
Pic 4 is the JP Morgan vault
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The Cleveland Federal Reserve emergency door also has the bubbled crane hinge. Not sure why they were designed this way, perhaps so the doors could swing 360° for maintenance?
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This was a previously unidentified vault and I just found a pic confirming it is a remote combination viewer vault at the Minneapolis Federal Reserve:
Attachment 21521
Attachment 21522
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I found another remote combination viewer vault located at the Boston Chops restaurant in the former Old Colony Trust Co. building in Boston, MA:
Attachment 21523 Attachment 21524 Attachment 21525 Attachment 21526
I will be posting the updated remote combination viewer vault inventory shortly; we've discovered about 40 so far!
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Here is the updated Remote Combination Viewer Vault Inventory. Please let me know if any you have any additions/corrections, thx.
Attachment 21539
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The Drury Plaza Hotel, formerly the Cleveland Federal Reserve Bank - Pittsburgh branch, has three vault doors. One is a remote combination viewer vault and the others appear to be a little undersized for fed vault doors... I haven't seen these vault door types in federal reserves before:
Attachment 21540 Attachment 21541 Attachment 21542
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Very good, some nice images of some very contrasting door types there
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Of the Drury Plaza doors, the third one is particularly interesting --
Attachment 21595
There doesn't seem to be any manual pressure system or boltwork handle; it looks like an automated system judging by the buttons next to the pin. There is an eagle emblem near the top of the door and stars near the bottom. My suspicion is that this is an HHM 5-star Constellation, discussed in a different thread: https://www.antique-locks.com/showth...-Constellation