All of the Sisco safes are currently under license as "Honeywell" safes.
You can try calling Sisco customer service at 1-800-223-8566 or email them at [email protected]
to request a user's manual or, as a locksmith (after providing proof of your friend's ownership of the safe, and your locksmithing credentials), asking the best way to open the safe with a default combination or ordering a replacement key.
Here is some additional contact info:
2835 E. Ana Street
Rancho Dominguez, CA 90221
Phone:(NNN) NNN-NNNNbr /> Fax:(NNN) NNN-NNNN
I wish you and your friend much good luck!
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Edited by Cher on 3/18/2010 at 7:12 PM EST