The English belt buckle can work as a baldric buckle giving a half inch on either side of a 3 inch belt. The space inside can accept up to a 4 inch width.
Already got me an original 4" buckle on be belt. It be square in design as well.
I am looking fer a 3" French style ta replace me baldric buckle. If'n it's possible.
I be interested in a buckle ta fit a 3" baldric.
Can ye keep me posted when it might be in th' works?
I had read that bigger buckles will be in th' future.
Check this place out, mate. Thar be a tent pattern in thar somewhar, mayhaps.
http://www.ivanhenry.com/extras.html
Look on th' bottom o' th' page, mate!
'Ope it helps!