Vintage Japanese Vase?

Look online for dealers in oriental art in your area. They would probably be pleased to look at it and tell you what they think it is. If it's any good they'll make you a lowball offer for it.

Vintage printing consumables.

Check that there's no cracks or chips in it after you carelessly "stumbled across" it; if there are it could negatively affect the value.

I'm knowledgable but far from expert, and your pictures are not enough anyway. Every day someone posts a 50 cent piece of something here wondering about it. IMO your vase is far from that. Probably not worth a million dollars but well worth getting it looked at. It's a fine piece.

That looks Chinese. Japanese style is simpler. Yours has a lot of detailed decoration which suggests Chinese. Search chinese pottery marks online. I am sure there is a website or two that will help you identify it from the mark on the bottom. 

Out of curiosity I did a google search of 'chinese pottery marks' and found a ton of websites. You just have to wade through those until you see the same mark. 

There is no way to tell without seeing the stamps on the bottom. 

Here is more pictures