This is a unique unipart that may be of South American (Uruguay?) origin. It is very similar to U-3087 from Germany but has a different shaped crown. Perhaps it was made in German for export to a colony there.

This piece almost lays flat on the skirt but the cemented threaded rod could use a tiny bit more trimming. A very handsome piece with a green ink mark.

No visible damage.

Let's go $120 plus shipping on this.