Hi Eric,
I've seen and handled some of these miniature gunongs, I guess they are souvenirs. I have a similar one, see here:
http://www.vikingsword.com/vb/showpo...54&postcount=1
Our member Spunjer also has some very nice ones but can't find the thread at the moment.
Here some others in small size from other members:
http://www.vikingsword.com/vb/showth...ghlight=gunong &
http://www.vikingsword.com/vb/showthread.php?t=24831
Like said, I think they are souvenirs, I would guess that yours is from around 1940.
Regards,
Detlef