Anyone know what gun this is?

[Overcharged]

My grandfather gave this gun to my dad and when my dad passed he left it to me. I have no idea who made it or how old it is. There are no numbers or letter's on the gun except the 707 on the bottom. I thought maybe someone on here had seen one before. Please let me know if you have any idea what it is or know where I could find some more information on it. Thanks in advance

 

[ripnbst]

Posting pix with something like your hand or a sheet of notebook paper or a dollar bill or something everyone is familiar with in terms of size would help.

 

[dreamweaver]

similar to colt theur derringers, but the square butt is not colt. many european derringers with similar frames. check derringers from france and belgium.
jmho

 

[Overcharged]

added size pics compared to a $5 bill. @dream, ya looks alot like that

 

[chris in va]

What is the bore diameter?

EDIT: I did some Google-fu and came up with this site...some guns look very similar to yours.

http://www.littlegun.info/derringer/a colt gb.htm

Oooohhh...I found it! What do I get?

Derringer Southerner cal 41rf.



Uploaded with ImageShack.us

 

[WDE2010NC]

How about this?

http://www.gunbroker.com/Auction/ViewItem.aspx?Item=218500711#PIC

*edit-Oops....Chris beat me to it...

 

[Overcharged]

made from 1866-1873. I didnt think it was that old. awsome guys! I cant thank you enough.