Cold Steel has a variety of sabers and a 1917 cutlass, but it has a 25" blade and is 29 5/8" overall. However, they do have a latin machete that has a 21" balde. What you could also do is contact a forge and see about having one custom made. It will cost more to do it that way, but you'll also get exactly what you're looking for. I would suggest Baltimore Knife & Sword, but they're here in the states.

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf