Ah, a subject I know a bit about. I'm a Chief Mate on a ship (oil tanker) so nautical history naturally interests me. The anchor there is the old style, which was unchanged for centuries until the 1810's or so.
The anchor there has curved "flukes" which wasn't done until around 1815-1820. Before that they were straight. Now, most "stocks" that make the "T" were made of wood until the 1850's, generally. I would say it's from the latter part of the 1800's onward.
The chain is stud-link type, which as a side note is about 50% stronger than oval links. It looks hand-made which was done right up to the earlier part of the 1900's. That doesn't mean the anchor is the same age as the chain, but it probably is since they often got replaced together back then. The shackle is of the early 20th century variety so my guess overall is it's about turn-of-the-century, give or take 20 yrs. Also, they were last used on sailing ships which died off in the early 1900's as well.
The Brits started shying away from that anchor design in the 1850's so my tendency is to think it's either American or Canadian.
Steve
