Letter Opener Celtic Weave Pewter. This is a very striking Pewter Letter Opener with a plain blade. The Letter Opener has a Celtic Weave Handle which fans out at the top with a Celtic Knot. At the bottom is a circle with a plain domed shape inside. The Pewter Letter Opener measures approx 18 – 19cm long and is made by British craftsmen. The Celtic Letter Opener is presented in a dark blue leatherette box on a velveteen pad. The Letter Opener could be engraved on the blade.