Alcatraz Brass Key Fob Chain Tag

https://www.alcatrazhistory.com/regpage1.htm      An interesting read ... 

Keith

Lowell Sigmund inc I designed & mfg High end brass decorative gifts for the home & office . We sold retail stores in the U. S. & some in Europe.... Location Los Angeles 

The pieces you refered to dated 1976 are in all likelyhood remakes of the original as the Prison closed on March 21 1963. I would imagine a vintage remake from !976 on Etsy selling for $191.50 CDN (including shipping is a good deal.)

Through research I believe what you have is eaither a test piece by this company, an error that was not reverse stamped or actually a key fob from Cell Block B used circa 1934 - 1963.

I would encourage you to contact the museum located here

 https://www.nps.gov/museum/exhibits/alca/fedPrison.html

If this is a vintage remake I would estimate it $50. If its a remake error perhaps $75 - $100 ... but if you can validate it is real and period by providence from the museum. It could be worth much more perhaps $500 - $1000 .... or more in the right market,

Keith if you contact them and they can validate its real it would be very cool ... I would encourage you to do so and keep a copy of what they state (ex email) this would be providence and add value to your piece.. There are probably historians as well that could validate it. As a professional appraiser thats what I would personally do in this instance ... go to the source .. go to jail .. do not pass go nor get $200 : ) 

Thanks for sharing this piece ...

Kindest Regards ..

Thomas J. Gordyn

Certified Proffessional Appraiser - AIOA

Proud Member of The American Numismatic Association

I also have one of these keychains and have been curious about it. Mine reads the same as the one pictured but the lettering isn't as thick and there are no markings on the back. I went to www.nps.gov/museum/exhibits/alco/fedPrison but didn't see any way to contact them.