Halls Safe Co

[highball]

I have recently acquired this safe from a local family. Naturally it is locked and nobody remembers the combination. The only information that I have from the family is that it was inherited from an uncle, the combination had 4 numbers, it was burglary and fire rated, and that it would open to the same combination no matter if you started left or right. At last memory the safe was empty when it changed hands within the family. The reason I now have it is because of a divorce and no one else wants it. There is a business name painted out on the front that names the original owner as Sands Kline & Co. I am determined to get this bugger open so I can use it.
The dimensions are:
H=44 in
W=30 in
D=24 in
Serial number is 18972.
The door measures 26" x 32"
I have not had much luck finding information on the different lock types of this company. I would really appreciate some guidance on how to approach my new conundrum. Thanks in advance for whatever info I can get. Pics attached.