Halfcrowned

Largely, but I've added details, measurements, and further context from my research into the coin, so its not quite the same. If posting more than one post on a single topic matter isn't allowed I apologise - I wasn't aware

I purchased this 1745 George II LIMA half crown on eBay for £170 and have been looking into its authenticity. The coin measures 33.24mm on the 12 to 6 axis and 34.54mm on the 9 to 3 axis, meaning a slightly oval flan. Thickness is 1.98mm and weight is 14.94 grams. I recently measured a second LIMA half crown in person, which measures almost identically (33.50mm from 12 to 6 and 34.32mm from 9 to 3) suggesting the oval may be a characteristic of this type (?). Under loupe examination, the reverse fields show what appears to be a genuine aged surface, with scarred pitting, micro abrasions, and contact marks across the surface. Edge inscription is legible throughout and doesn’t show any clear evidence of fillings or any seams. I don't have access to a silver tester, but I am fairly certain it is silver. The main discussion points I've had are the sharpness and the relief, particularly of the reverse, along with the slight reddish coloration (though I think my photos overstate this) and overall large-ish and oval diameter. I’m happy to provide any additional photos or closeups. Authentic or not, what do you guys think?

Thanks for your help all, I really appreciate it. I've done some detailed research and taken measurements and will make a new post in the correct subforum soon, but your help has been invaluable. @Citizen H From examining your photos, your half crown is the same shape as mine - slightly oval, being wider from 9pm to 3pm than it is tall from 12 to 6pm. It would be really helpful if you could just confirm that? I've done some research and found that a large number of LIMA half crowns, along with a few standard half crowns from 1745-1746, actually have this very slight oval shape. Only by about a millimetre or a millimetre and a half, but noticeable once you know. @Rob I think you're absolutely right about the spread flan, and I see what you mean about the teeth. This is measuring 33.2mm from 12 to 6pm and 34.4 from 9 to 3pm. I cant see any filling or aesthetic differences in the edge, but as I mentioned above, from research and looking at many 1745 half crowns, I've noticed this slight oval shape to be quite prevalent. Does that track with any of what you might know, or have seen? I handled a LIMA from another collection that was oval and almost exactly the same measurements, down to the .xx millimetre

Hi @Paddy, thanks for your response. I think I'll have to do my best to look into it further. I've posted this on a few places and the feedback has been mixed really - some outright say fake due to the toning/colour, some say it looks perfect, some say 34.5mm is right on, some have told me the sizing is suspicious. Not sure why this is in Decimal Coins, not where I had intended it to go! Still getting to grips with the forum. @Chris Perkins If you could move it I would be greatly appreciative, if not just let me know and I'll delete and repost in the correct place

I'm fairly new to coins, and the only reason I ask is because the size of this in hand is a bit bigger than my other half crowns of the period, which all seem to be around 32-33mm. It seems to sit at around 34-34.5mm. It weighs 15/16grams on my (cheap!) kitchen scales, is non magnetic, and has the correct side inscription - DECVS ET TVTAMEN ANNO REGNI DECIMO NONO.