I should have also mentioned the 10% Rule - bottle collectors will often point to this rule of thumb for value of a damaged bottle vs. a perfect example. It is in practice probably more like the 5-15% and depends on the degree of the damage, how visible the damage is, and how scarce or difficult it is to find the bottle in general.
Note that in the case of your bottle, according to the Don Fadley page, a case of these bottles in its wooden crate sold on eBay in recent years.