The claimed Voynich page

[Koen G]

I contacted the owners of the firm and they told me that the shape of the seal represented in their web site is a wax seal commissioned by one of their customers (as they remeber) many years ago and the customer showed them a photo with an old seal taken from a document dated XVIII th century but since it was an old commission they don't have any other informations. The seals they produce are at least of 2,5 cm diameter, those on the parchment is 1,5 cm diameter, tipical size for a personal ring seal as told me the sphragistics experts of Italian State Archives.

I'm not sure if I buy the "custom design for a client" angle, though I see why the company prefers to give this explanation. The AG monogram is part of a series, with the same design elements returning regularly. For example, here is Design 1 of their "AL".

   

This leaves three options:

1. The AG design happens to be the one they based the entire series on. Small chance, in my opinion. Also, if you did a monogram for a client, would you put it up for sale and base a product line around it?
   
2. The AG design is part of an original series developed by this company. This is quite possible, the company has existed for a while (second generation owners if their bio is up to date), so maybe it is simply not known to the current owners how these designs came into being.
   
3. This is all marketing talk and the design is part of a more widely disseminated stock among wax stamp makers.