with ArcGIS 10.2 I obtain:
Traceback (most recent call last):
File "_____________________\jsonarc.py", line 16, in <module>
ln = arcpy.AsShape(esri_json, True)
File "C:\Program Files (x86)\ArcGIS\Desktop10.2\arcpy\arcpy\arcobjects\geometries.py", line 164, in AsShape
return convertArcObjectToPythonObject(gp.fromEsriJson(geojson_struct))
File "C:\Program Files (x86)\ArcGIS\Desktop10.2\arcpy\arcpy\geoprocessing\_base.py", line 483, in fromEsriJson
return self._gp.FromEsriJson(json)
ValueError: Invalid geometry type for method
with ArcGIS 10.3 I obtain your result.
So thank you Yoshua for helping isolating my Problem.