I'm trying to determine if this is a reproduction or not and what the age may be. I'm not finding any in this color. It is almost black glass or a super dark amber. It has a huge crack that almost encircles the the eagle side. The lip is applied glass. Lots of wear to the bottom. Any help you can give would be appreciated.

Wow, nice bottle, too bad it is cracked.

It is definitely not a reproduction! It appears to be the GXI-7 mold as listed in the McKearin flask book.

You would be talking thousands for value if perfect - now hundreds given the crack.

If I had to hazard a guess I would say the color is olive green - one does on occasion see some of the Pikes Peak flasks in this color, but most often aqua.