ChristianR2D2

Thanks for all the feedback. One last question, would it be a good idea or a bad idea to use uchiko powder to try and clear up some of the steel?

I'll try to post more of the pictures I took but to my untrained eye the steel looks cloudy just about everywhere.

I don't know if the blade is re tempered. The steel does look very "muddy" I have so many pictures trying to show ANY activity in the steel but there are essentially no clear spots on the blade, at least to my untrained eye. I do agree that there are too many unknowns and therefore this can just be kept around until someone wins the lottery.

A friend of mine purchased this blade from an auction site. The blade is in bade shape. There are some open welds that I tried to photograph. Here are the specs: Sori: 1.5 cm Ha watari 70 cm Motohaba: 28 mm Sakihaba: 21 mm Kasane (at machi): 6mm Low shinogi Chu kissaki (4.2 cm) Suguha It looks old? Cut down from a tachi? I haven't seen many nakago from old blades, what era would the patina be consistent with? I'm so new to this that I don't know if I should disregarded this blade because of the open welds, or is it ever acceptable and worth while to have a blade like this sent out for polishing? Any advice would be greatly appreciated.