Key ring similar to this one dated 1882 http://sarpur.is/Adfang.aspx?AdfangID=344097
I have removed the ring at the top and did some minor changes to make it printable in this size and still with gaps big enough to hook something to it.
The Christogram IHS is a monogram being a symbol of Jesus Christ in form of acronym. https://simple.wikipedia.org/wiki/Christogram_IHS