I have a hip flask of unknown origin, time, maker, basically I know nothing about it and Im trying to find out more. The first mark is a shield with a large 'S' and an 'm' in the middle. The second mark is a shield with '.92' in it which I am sure is the decimal standard mark for solid silver, this would make it either US, Irish, Danish or Dutch. The third mark is a shield with what appears to be a tower or a fist on top of 8 crossed arrows. Im thinking it might be Danish as there are several S M makers for Denmark.
The flask itself is quite plain with rounded corners and no remarkable features.
Any more info or confirmation on what I have surmised so far would be great and much appreciated.
Here is a photo of the item

sorry in advance for not having a photo of the entire object and if it needs deleting then I will repost on Thursday with 2 images (that's when I get to see it again)