We've always wanted to have a medieval bit made for presentations and to further our understanding of the medieval riding experience, and to improve the overall impression in the field. After looking at several bits and some of the best renderings from artists of the time period, we settled on the drawings of Italian artist Antonio di Puccio Pisano (aka Pisanello d.1455).
This first image is a sketch that detailing the action of the bit and the horse's mouth. You see faint indications of the shank shape. The mouthpiece appears to be a thick snaffle type. You can also see a very simple leather or fabric "curb" with a 'T' connection that goes through one of the bit rings.
The next image gives a clearer view of the bit's shape, purchase, and connections. It also shows the almost ubiquitous bosses. You can also see another example of a curb "chain". In this case it looks like a leather/fabric type that has chain on the ends. You can also see the two types of reins and where they are connected.
When working with the professional bit maker here in the US, I submitted outlines and original images and after a brief exchange of functionality, a price was agreed upon (this is a custom bit). Within a day of the final drawings being submitted, the bit maker sent the next photo. It details the shank lengths and he was offering me a choice of which length I wanted to go with.
The original bit was supposed to be 8" inches to fall more in line with Normandie's 7 shank Myler. However, the image that we provided suggested that the bit in the original art was a little longer. So, after a quick discussion, we decided to go with the longer shanks.
This is the result, the complete bit.
From the time that we designed, discussed, and had the bit in hand was 3 business days. One of those was the shipping.