Raising the issue of the frog again - the 3" 3H may be stated as standard production but I've done much searching and not only can I not find another 3" 3H flower frog but I cannot find any 3" flower frog, or a flower frog that is the same shape as mine...none are.
Mine is triangular in shape. Mine is triangular in shape because it has only one row of 8 stretched oval holes and one large central hole that is larger by comparison to the oval holes and certainly is larger than any I've looked at on other frogs. However much I angle it to view it I cannot make it look anything like any of the photographs or represent a fat curved domed shape. It doesn't. The pictures below are the most 'fat curved domed' I can make it look and it's not like any of those that I can find.
I found this http://www.bullworks.net/ffg/engpg/pgrod/pgrod.html
which shows a picture from the Davidson 1912 catalogue demonstrating their domed frogs which came in sizes from 2 1/2" to 10".
The picture appears to show two 2 1/2" frogs as the small ones - I think
And I think Natalie's picture possibly shows those type of frogs.
There is no picture of a slightly larger one which would have been the 3" .
I think it is possible that my frog is not standard production. Is it possible it was actually made to contain these silver epergnes perhaps or, with the larger hole is it possible it was made to contain something that was peg-based, like a figurine of some sort or a cloud glass epergne flute that had a peg base?
I've attached more pictures of my frog for comparison