Image 2 - I think it's AI but it's very hard to tell. There's also a makers mark, but also difficult to read. There are 3 letters, I believe the first one is a D. I'm not sure what the third image is.
Can anyone tell me anything about these marks.
Thank you.
![Image](http://static.flickr.com/38/117853340_e9892b5e4d_o.jpg)