Justin,
Kunitaro San has already mentioned, and reminded us, that as a rule of thumb -any sword on eBay or elsewhere from Japan with a signature and no papers, or old papers, is almost definitely gimei. This sword needs a polish. Currently no hataraki can be seen. In my opinion though, the neat things about this sword for someone new to collecting are the features not found in every "package"... The sayagaki, lead plug, horimono, etc. It is also quite old with history. Other than that, this blade is nothing special, probably gimei, and in need of a polish. The Hamon also looks like its been "dressed up". If the price stays low, it might be neat to study for a bit hands on. Just remember to buy the blade, not the signature.
Josh