Old Herring Safe Plate?

[twd27]

Hello everybody. I recently came across an old Herring Fireproof Safe plate at a yard sale and have not been able to find any information about it online. It weighs about three pounds. I've attached a picture (sorry about the dark quality!). Just in case you can't read it, it says: (On top) Herring's Patent, (On right) Fireproof Safe, (On bottom) Depot 135 Water St NY, (On left) May 18th 1852.

As I said I haven't been able to find much information and/or a solid value on it. I've emailed two separate antique safe collectors online. Both of them told me that they really had no idea, but one of them gave me a ballpark figure of between $100 - $150, while the other told me he would value it between $650 - $1000.

I'm very curious to know if anybody has any new information for me.