Don't have an answer yet, but 1) it's not a coin, perhaps a medal or token 2) The key emblem is from Bremen, German States 3) the phrase translates in Latin to "to sail is necessary; to live is not necessary" 4) I like it.
I have no idea but it's a cool medal, good luck! It is not necessary to live, it is necessary to sail (sonlarson beat me to it )
Thank you for your responses my grandfather fought in Germany and was in with alot of other things including a lot of nazi German currency with ss stamps on them on the notes and a lot of nazi coin Sent from my iPad using Tapatalk
Click this link out: There are a lot of Bremen Tokens on it, might be of some help? http://www.bing.com/images/search?v...36&qpvt=bremen+token+or+medal+1917&ajaxhist=0