Celyon Quarter Farthing 1/4

Very nice coin!
I cannot comment on its authenticity, but based on other examples of this type which have sold on ebay recently, I think you could expect this coin to sell for perhaps $30 on ebay (a nicer example recently sold for $46), even with what looks like evidence of an old cleaning, or perhaps a bit of corrosion on the reverse.

I just did a search on ebay uk for quarter farthings. Reasonable quality coins are being offered at around £80 to £120. Top quality ones are around x2 or x3.

Except I saw a group of 5 with different dates offered for £19 !!!

I bought this with both eyes open. At that price it is too good to be true and almost certainly is. At less than £4 each for possibly modern counterfeits, I will accept that. Once they arrive I will put up pics for comment.

Your coin appears to have remains of a coating between letters on the reverse. I also note wonky letters above Victorias head. Can anyone cast light on this?

I would be curious if a sold items search shows up any that have actually sold.

Authentic ones (presumably) can be seen here: https://www.coinarchives.com/30ae38...age00830.jpg
That group sold for 320 pounds in October, or an average of less than $100 each.

I agree those Ns don't look right, though the link shows some misalignment of the Ns on the 1839.

I did an ebay "sold" search out of curiosity. Prices varied enormously.

I did find objects described as "pobjoy anniversary restrikes", sometimes mentioned as 150th and once as 175th anniversary. The latter is impressive for an original issued in the early 1850's. Where is my tardis...?

I could not find any details on these alleged restrikes. Does anyone have any info on when they were released, and how to identify them? Was Pobjoy even involved at all, or was their name unofficially borrowed?

Peck states the weight range of a quarter farthing is 16.6 to 19.2 grains, with an average of 18.13.

At 15.432 grains = 1g, I work these out as 1.08g, 1.24g and 1.17g respectively to 2dp.

Clayton gives diameter as 13.5mm.

The coin as shown does not look good to my eye. All of the examples I have seen are far sharper.

You will need a very accurate scale accurate to 0.001 at the very least and a 0.0001 gram scale would be preferable. I am NOT referring to the cheap scales with three or four digit readouts. Most non-laboratory balances have a potential 2% error rate - too high for this purpose since 2% of 20 grams is 0.4 grams. Expect to spend north of $500 for a scale of that accuracy.

I agree that examples I take as "real" (e.g. the lot that sold at Spink) have sharper lettering.
The earlier link I posted shows that examples of this reproduction (listed as such) are selling for $3.50 on a site called bonanza, and that the OP's coin is listed on a couple of sites for $50 and 65.

I, like you, found these same coins for a price that was to good to pass up. Five for $28. I was surprised to find so many fake ones on ebay.