I presume the main interest in the name is because of ammonia fuel cells, which definitely seem to be a thing with a future in the low/no carbon future. The name is hard to appraise, since most (all?) of the publicly recorded sales appear to be registry sales in the lowish $$$$ range. Given your other sale, I would say this is similar in quality, but maybe slightly less desirable since as of now less well known. To the right end user it could get a good price, though. Best wishes for it.
Bob