My wife and I purchased our 1913 home in late 2014 (in Canada). The basement is almost entirely original, and we saw this thing under the rickety stairs, and for the last 6 years we assumed it was some type of access to the main drain... so not something we really wanted to investigate unless we had to.


Today however, after all of 5 seconds of looking at it, we discovered it’s an in-floor safe!

It’s a Keep/Safe, and while I can’t see a model number, the serial number is seven characters long, and starts with “P”.
After researching online (this site has been particularly helpful) we’ve tried to crack it using the following combinations (L-R-L, 4,3,2):
- 17-25-78
78-25-17
87-52-17
25-50-25
50-25-50
75-50-75
50-75-50
With these combinations not working, I tried contacting the manufacturer. From my research it seemed like SentrySafe is now the manufacturer, and a call to their customer service verified the serial number as one of theirs.
Because we live in Canada, SentrySafe has sent me a “SAFE COMBINATION & KEY REQUEST FORM” which needs to be notarized, and once they receive it back, they will sell me a combination for this serial number at US$30, however there is no guarantee the combination will work.
A few question to the knowledgeable folks here:
1. Before I try SentrySafe’s combination, or calling a qualified locksmith, is there anything else we should try?
2. What is the likelihood the SentrySafe combination will work?
3. Could a qualified locksmith open this safe without damaging the safe? How long should it take them?
4. We’re shortly redeveloping our basement, and will be digging out the current basement and then pouring new concrete. Is it possible to break out the safe from the current concrete housing and reinstall it?
Thank you all, I hope my first post hasn’t broken any rules!