Photographs show two arcing filaments of nebulosity to the north and south.  It is unclear to me at this time whether or not these filaments are visible in amateur instruments.  I'd love to hear from anyone who has observed them.

The view in a 6-inch at 50x.

In April 2000 I observed NGC 6210 with my 18-inch Dob on an excellent night under dark skies:

At 83x I was really struck by the obvious sky-blue color. I seldom ever see color in planetaries and when I do I usually see a very slight greenish tint. To see blue in this one was the surprise of the night. At 430x it took on an eerie appearance, as if it were being viewed through wrinkled cellophane, smearing the image. It appeared as a bright oval with rough, poorly defined edges and a very slight brightening toward the center. About this oval I thought I could see a faint outer envelope that was slightly brighter at the ends of the central oval.

 

The above image from the DSS shows a 20' x 20' field. North is down and east is to the right.

The above color image was created by combining red and blue second generation sky survey images. The odd shape of this nebula is apparent in the photograph; the appendages are considered by some to look like the legs of a turtle. The field of view is 5' x 5'.

At a distance of 4700 light years the apparent size of this nebula translates to an actual diameter of about 0.4 light years or 25,000 AU. That's about 300 times larger than our solar system if you take its diameter as the mean orbital distance of Pluto.