It depends on what your budget is and where you will ultimately use it.

I would say it's from the 40's. Repairing a broken leg isn't much, but if it's 'rickety' it could become an investment. Depends if you like the style and are willing to spend more money than you may have bargained for.

It's lovely!....by having a repaired leg, the value is impaired. I would guess it's a pre depression piece...or perhaps even earlier, and very stylish and fine quality. When restored I would guess it's "worth" maybe $1200....
Not worth restoring to sell, but to keep as a lovely sofa....it certainly is!!

"by having a repaired leg, the value is impaired"

As opposed to having a broken leg? I really don't think so.

Any time a repair is made the value is impaired....better repaired then broken....but it's still worth less than if it had never been broken.