What is this violin??

[cecek0202]

hello! 

i am new to this website, so forgive me if there’s anything on this post that’s out of wack... But I am a high schooler who wants to know more about my violin.

I bought it around 4 years ago and was told by the business (who of course sells string instruments) that this is a German violin around 100 years old. I’ve always been curious as to whether or not this is correct, but also- what are these weird spots on my violin? Many of the nicks and circular indents were on the violin when I first got it- it doesn’t matter to me, but I’m just curious whether or not someone here knows if there’s an actual reason for this. 

There’s no label inside, but instead there are weird black spots. (I know, it’s a terrible pic... that’s through the f-hole) I tried looking around online for any reasons for the spots or indents, but I couldn’t find anything. 
I greatly appreciate any input!!