Woven Assomption Sash

I have a friend who is a part of the mountain man experience, sorry Gary, I don't know what it's officially called.  Anyhow he's looking to weave an assomption sash, his wife Diane is a weaver, and he weaves on an inkle loom. Traditionally these sashes are finger woven but this reproduction (above) that he bought was machine woven and that's what he would like to replicate, he would like to weave his own. This machine woven one was part of a wider piece of cloth because if I look closely at the one selvedge it is not a selvedge at all, it was cut and serged with black thread that barely shows up - I can't imagine it will last very long before falling apart along that edge.  It's slightly under 5" wide and very long. I hate to admit this but for some reason I am having a hard time wrapping my brain around analyzing this to come up with the draft........maybe it's the Tylenol PM I took last night that's left me with a brain fog hangover today (I rarely take it). I'm fairly sure it's a 3/1 twill, definitely warp faced. I do think I can get the color order easier by unknotting the fringed end and looking at it thread by thread, color by color. So, before I do that and tax my brain too much I thought I'd ask the other weavers if they know of draft somewhere out there for an assomption sash. I have found tons of information and book references to finger weaving them but I'm looking for a draft for a 4 harness loom as Gary doesn't want to spend years finger weaving one. I've found Carol James's website, she's written books and teaches but it looks like it's the traditional finger weaving technique (wow - incredible weaving) So, if anyone has come across this it the past and has a draft or knows where I can find information on one it would help me out and save my brain cells..........