Thanks, Roy.
The unfaceted weights are particualry attractive. Their relative simplicity appeals to me; being able to appreciate the layout without the visual distraction that comes with facets. They appear, however, to be far less common that their faceted siblings; although perhpas not particularly under-represented when considered against the variety of cut patterns that were available. A brochure from the mid/late '70 shows that only 5 of 36 patterns on offer were uncut.
BTW That same brochure lists 'ruby' as one of only four alternative background colours available. So perhaps the colour wasn't as unusual as we thought, although I haven't noticed many around.
Best wishes.