Hi, and thanks for posting.
The key to identifying the bottle here is the "D-126" marking. I have connected this to the Seagrams company and Calvert brand. Have seen this marking on several bottles so it may have been used for a different product than Calvert.
My best guess is that it dates to the 1960s - possibly a bit earlier or later.
With this info, you can go out and search for "Seagrams advertisement 1960s" or "Calvert advertisement 1960s" and see if you can find an ad showing the bottle. I have pretty good luck finding these on ebay....will do this when I get a moment.
The decorations on the bottle are part of the mold - this is pressed or molded decoration as opposed to hand cut decoration.