This seller raises a valid point – Walter Lampl made MANY charms other than the lovely guilloche Flower of the Month charms for which he is presently best known. He held hundreds of charm patents, and I’d love to have a bracelet full of his gold mechanical charms. click on this link for the Walter Lampl 14K gold Hourglass I found

The grace and style of this lovely mechanical would declare it a Walter Lampl, but of course the makers mark is the tell-all.
a bargain i think? walter lampl hi fi wonder if it has a stanhope?