Hello and welcome to Numista!
Basically the NRI is a number derived from the number of members that have that coin/medal/token/paper object in their collection. The higher the number the fewer the members that have one. So a high number means different things.
1) The object is rare, hard to find, very valuable and few people own it for those reasons. Many people want it.
2) The object is a piece of crap, a trinket nobody wants and is in the Numista Catalog because one person wanted to create a page with their pictured object.
3) Something in between 1) and 2).
Yours probably falls under #2.