Roman Tunic - Help

[Decebalus]

On Republican togas it would be sewn only on the rounded part (sinus), sewn because it is not possible to dye a rounded edge equally.

Hm, interesting - I never dove into togae in any kind of detail. Is this personal conjecture or is there research you are basing this on? Are there any finds attributed to a toga, btw? I never heard of any myself ...

That the stripes on the toga were sewn on is from the book: H.R. Goette, Studien zu römischen Togadarstellungen (Mainz 1990) and it seemed plausible to me.
I'm no expert in the textile field, but as far as I know it would have been also impossible or at least very complicated to wave in a rounded border into a garment's rounded edge (wouldn't you end up with a zigzag pattern?).
Or is this assumption wrong?
I've never heard of an original toga to be found - all what we know is from art and literature.

@Tobias: Jvrjenivs has answered this question better than I could. I'm no reenactor so don't know the market for the different items.