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Murphy1986

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Posts posted by Murphy1986

  1. 3 hours ago, LawrenceChard said:

    There are different types of sand, and different grain sizes. In any case "sandblasting" shsould probably be treated as generic rather than speciific, when referring to the meium used. It is likely that sand was the original medium when the process was first invented back in 1870.

    Sandblasting, sometimes known as abrasive blasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove surface contaminants. A pressurised fluid, typically compressed air, or a centrifugal wheel is used to propel the blasting material (often called the media). The first abrasive blasting process was patented by Benjamin Chew Tilghman on 18 October 1870.

    There are several variants of the process, using various media; some are highly abrasive, whereas others are milder. The most abrasive are shot blasting (with metal shot) and sandblasting (with sand). Moderately abrasive variants include glass bead blasting (with glass beads) and plastic media blasting (PMB) with ground-up plastic stock or walnut shells and corncobs. Some of these substances can cause anaphylactic shock to individuals allergic to the media.[3] A mild version is sodablasting (with baking soda). In addition, there are alternatives that are barely abrasive or nonabrasive, such as ice blasting and dry-ice blasting.

    😎

    I am a stone mason by trade, we use shot blasting for our lettering and design work, and a less abrasive fine sand to create a matt finish on polished granite. Therefore logic would dictate that if you were to lower the abrasive properties of the blasting media enough it would also work on a coin. In my professional opinion that is. Shall i blast a coin and find out?

  2. 52 minutes ago, LawrenceChard said:

     

     

    I / we don't like pretence. It is low level dishonesty, but extremely common.

    I would much prefer it if someone asks "Can I pick your brain?"

    If someone simply want to know if they have got a sovereign or a half, we can usually tell with milliseconds, and are happy to help inform people.

    Sure, if someone wants a more thorough test and appraisalem we are also happy to to do it for a charge.

    Jewellers often know very little about coin, but don't realise how little they know. Don't let them acid test your coin.

    Pawnbrokers are worse than jewellers.

    You coin is undoubtedly a half sovereign.

    You wouldn't get that sort of service for nowt in Yorkshire.

    BTW: Have you ever heard of Harvey Ross?

    😎

    Thank you! Thats great news.. i may think about getting it properly appraised and maybe cleaned in the future. Its just good to know its not a fake. 

    Never heard of Harvey Ross, whos that?

  3. 23 minutes ago, stefffana said:

     

    Both are genuine, I have no doubts about this.

    Your half sovereign probably been tested before with acid, I suppose the brownish stain is from another pawn shop evaluation.

    They are barbarians... Using steel file, scratching deep, using nitric acid.

    A jeweller have another approach regarding old coins jewellery.

    Im worried about getting it tested now for fear it will incure further damage..

  4. 18 minutes ago, stefffana said:

     

    Both are genuine, I have no doubts about this.

    Your half sovereign probably been tested before with acid, I suppose the brownish stain is from another pawn shop evaluation.

    They are barbarians... Using steel file, scratching deep, using nitric acid.

    A jeweller have another approach regarding old coins jewellery.

    Oh great stuff! My grandma never had money so to be honest i assumed it was purely decorative. 

  5. 53 minutes ago, tray said:

    This is mine, I still wear it, it gets a wash in the shower. It was my husband's aunty's she worn every day. Definitely wouldn't part with it 

    16598564571263701388855697893204.jpg

    16598564927471648108004481873755.jpg

    Looks in better nick than mine! Have u had it tested? Oh no u cant part with things like these..

  6. 19 minutes ago, jackflash123 said:

    Haha 😆 I’m also a Yorkshire Man, living in Yorkshire, and everyone knows how tight true Yorkshire folk are.

    Wait was that a tongue twister 🤔

    Let me rephrase that to everyone knows how good with money true Yorkshire folk are 😆🤣

    Classic lol 😂 

    Proper class at not opening our wallets us yorkshire folk! I cant remember what the inside of mine looks like..

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