I have one like that I inherited from my dad but it's a Mansfield tenor banjo. Same case, same resonator, same inlays on the fret board but it is gold plated.My dad had purchased his back in the early seventy's and paid around $ 400.00 back then. I wish I had a five string neck for it. I would convert it.
Kasuga made "Bowtie" masterclone of the 1970's. Sold under a lot of names, mine was Alvarez. Many are not very good, having a die-cast zinc tone ring and cheesy 1/2" plywood rim. Not to mention the weird neck attachment/adjustment mechanism. The fancy "Inlays" in the headstock and resonator are actually overlays, paperthin (some say it is paper) laid on the surface and coated with thick catalyzed finish.
I have little respect for these instruments, based on personal experience. I would set the value at $300. I would not buy one.
Some were made with heavier rims/ planetary tuners (instead of Kludsen type) and brass tone rings. The value is higher, but not very much in my opinion. Say $400. I might buy one of these, if it was priced really well.
Except for the headstock plate design and name, it is a ringer for the first banjo I ever bought with my own money in the early 70s when I was a teenager which was a Emperador banjo. Other than being made in Japan and being sold under several other names, I never knew much about who really made them. The prices the others are quoting are probably pretty close. Mine was a good banjo to learn on, but that was about it. After much learning & tinkering (thinned the neck) and a different tone ring (raised head) it became an OK sounding & playing banjo until I could afford a better one.