Here is an example of a Manaslu 96. It is the small size of the line of classic stoves produced in Japan by Quality stoves. A very well made stove it has small size with output compared to a Optimus 00. This stove has number codes on both the burner and fount. 704 burner, 703 fount. I surmise as others do that it may relate to Year "7" 2017 and 03 / 04 as March and April.