It dates to the Later Bronze/Early Iron Age, circa 750 - 600 B.C. , the ""exotic" lake deposit hoard actually contained both bronze and iron items, found inside a large, sheet bronze cauldron.

Three sickles were found in the hoard, two of bronze and one of iron. The socket of the iron sickle contained the remains of an ash haft.

Of the two bronze sickles, this is the larger. 150mm x 97mm, 176g.

The socket is oval and has holes for two rivets and has a narrow reinforcing band surrounding the mouth.

Although described as sickles, and certainly they can be used for hand pull-reaping, the significant part of their design is the longer, distal cutting edge and its heel. Both bronze sickles and the iron sickle have the distal cutting edge with a heel.

Clearly the outer cutting edge was to have a functional 'push' cutting action, something like that of flensing knives used in whaling, perhaps?

Indeed my local butcher in Titchfield thinks that before the invention of two-handed, long blade iron chining axes, this sickle would serve very well for reducing larger animal carcases by slicing through the ligaments of major joints. Experiment should confirm this.

The fifth photo shows a comparison between the two Llyn Fawr bronze sickles and a contemporary, common, two-rib flat back sickle, hafted with a hawthorn crook, alongside this sickle with a field maple haft.

The haft design is taken from the The Shinewater Park, Eastbourne, sickle.

Third photo shows exploded head and friction-fit haft, showing position of rivet holes. 

There is a lot of work involved in making one of these sickles.