|Note_en=from an advertising on the back talking about the presentation of Francis Warrain book "L'armature metaphisique", that was published this year. Advertising for a [[lever filler]] model in hard rubber and a mechanical pencil. | |Note_en=from an advertising on the back talking about the presentation of Francis Warrain book "L'armature metaphisique", that was published this year. Advertising for a [[lever filler]] model in hard rubber and a mechanical pencil. |