Are the Moser Vases designed by Josef Hoffmann with 9 or 10 sides quite rare?

Traditionally, the Hoffmann designed faceted vases produced by Moser Glass are octagonal. I own one such vase in smoky topaz. But I also own a nonagon (9-sided) that is pictured and I’ve even seen a decagon (10-sided) for sale that I may purchase.

So my question is this: are the 9-10 sided Hoffman vases in this design rarer than the usual octagonal shapes of this particular design? If so, how much more rare?

Just curious.