Vintage carl aubock brass letter opener-ruler knife. Good condition but the tip has some damage from use and there are a couple small bumps on the handles base.The item "Vintage carl aubock brass letter opener-ruler knife" is in sale since Wednesday, May 30, 2018. This item is in the category "Antiques\Decorative Arts\Metalware". The seller is "wayneosjewelry" and is located in Canonsburg, Pennsylvania. This item can be shipped to United States.