What Rapier Should I Use for Saviolo's His Practice?

Recently, I have been looking into practicing Saviolo's rapier after a little over a year of practice in Fiore's longsword. I was looking through the illustrations and saw an unusual rapier design that had an S shaped guard with no loop guard, a wheel pommel, and a blade with no ricasso. I'm unsure of any contemporary rapiers of that design or similar models in the HEMA market. I want to ask anyone who practices Saviolo's His Practice if I should aim to use a sword like the one in the book or if I should get a different type of rapier. If you don't use the design from the manuscript, I'd also like to know of what rapier design you suggest. Thank you for the advice.