Machins Mills 1/2 Penny 1775?

It's a counterfeit, but not a Machin's mills piece. There is only one Vlack variety of 1775 and this one does not match. There are collectors of these other counterfeits who may be able to offer more info.

I would say made in the UK, most counterfeits of this period were. Hopefully someone more versed in these will be along.

The regal halfpenny issued under King George III between 1770 and 1775 was struck in copper at the Tower Mint in London. It typically weighs around 10.1 grams and measures 29 millimeters in diameter. The obverse features a right-facing bust of George III with the legend "GEORGIVS III REX," while the reverse depicts Britannia seated with a trident and olive branch, accompanied by the date in the exergue. These coins were produced in large quantities and often exhibit weak strikes due to die fatigue and overuse, especially in later years like 1773. Despite this, the regal halfpenny remains a benchmark for distinguishing genuine British issues from contemporary counterfeits such as those from Machin's Mills.

The regal farthing, also copper and minted during the same period (1771-1775), is smaller and lighter, with a standard weight of approximately 4.9 grams and a diameter of 23 millimeters. It shares the same obverse and reverse design motifs as the halfpenny, scaled down to fit the smaller flan. Like its larger counterpart, the farthing was prone to soft strikes and uneven detail, particularly in the Britannia figure and rim denticles. These coins were intended for small transactions and circulated widely across Britain and the colonies, making them a key reference point for evaluating colonial imitations and understanding 18th-century minting practices.

So your weight falls in between so its therefore a CCC 1/2d. Its not a modern copy and does not have much crudeness to it so its not very desirable. It may be linked to some CCC 1/2d Family. See the book on these on Amazon. John Lorenzo, Numismatist, USA.