Call me crazy

[Justafarmer]

Am I the only person who uses a CAD system in attributing varieties? Attached is a mocked-up mocked up image done in paint for illustrative purposes only. I didn’t think this site could display a TCW or other CAD drawing so keep in mind the drawing precision available with a cad system is not possible with paint.
Anyway for each coin design I have established 3 landmark points (A,B,C). I place my target coin on a flatbed scanner and scan an image of it into a Cad system. I use TurboCad cost less than $100.00 off the shelf. I plot the three landmark points and utilizing the coordinate system (triangulation) of the CAD program establish the location of the mintmark in relation to these 3 points. Sort of a GPS system for coinage. I enter the coordinates into a database of known varieties and voila. I also use it to help verify mint marked coins that are commonly counterfeited. I’ll certainly discuss this in greater detail if you like.

[Maineman750]

You are the only one I've heard of so far.And I have to say interesting at the very least, but wonder how big and available is the database for known varieties.After retiring from an architectural office, I thought I would never have reason to see CAD again, now you've got the wheels turning

[lara4228]

I'm not very mechanically inclined, but your points (ABC) are being used as beginning reference points. And according to your example you do not leave room for any variance on the location of the Mint Mark.

I can't remember what the acceptable variance for location in the field below the date is; in short, does your CAD make room for this variance?

I think it may be a wonderful way to dissect coins and furthermore varieties.

[Maineman750]

I'm not very mechanically inclined, but your points (ABC) are being used as beginning reference points. And according to your example you do not leave room for any variance on the location of the Mint Mark.

I can't remember what the acceptable variance for location in the field below the date is; in short, does your CAD make room for this variance?

I think it may be a wonderful way to dissect coins and furthermore varieties.

lara, there is no variance from the same die, that's why this method is good for attributing a particular die with a mint mark.Complicated,yes,accurate, very much so.

[Coppertop]

Are you a machinist? My dads a machinists and everything always has to be perfect

[lara4228]

I know I'm not! But my friend is and boy does he ever make the coolest stuff for fishing! And yes, he is a perfectionist.

[EE1969]

Very interesting, I can see the use for defining specific die parings. Does / can die state (EDS vs LDS) or die deterioration effect the output?

[thecentcollector]

I've never used CAD to check for varieties, but I used to build planes for flight simulators back in the day, lol.

[Coppertop]

I've never used CAD to check for varieties, but I used to build planes for flight simulators back in the day, lol.

did you have a hotas cougar Ive used one for fun once and those things are incredible

[Amadauss]

Just a farmer, right. I bet you are the guy putting all those crop circles in the fields using a cad system .

Seriously, I have cad on my computer and would like to see this in more detail. Very interesting.

I love also the way the members can go check you out in your profile and see if their is any more info on just who you are but...... a paper trail. It lists who went to take a look. Curious people want to know.

[pman860507]

the only thing i use CAD for.

Should be working on this Plumbing riser diagram....instead im waiting on lunch time....

[Maineman750]

the only thing i use CAD for.

Should be working on this Plumbing riser diagram....instead im waiting on lunch time....

That sounds like my old office..waiting on lunch,5:00,and Friday

[Rollem]

Ok, Farmer.. Now I think you say you are using a cad program to identify varieties. I also suppose you have complied a database for different varieties.

Question: "Just a few, many others"
1.How long doesit take to build a useful database
2.What about variables in eds,mds.lds,vlds dies
3.What about no mint mark cents "coins"
4.Does this process apply to just certain types of errors. (Hub Doubled, mint mark placement)

Will we now have and error coin with a short or long Hypotenuse? or incorrect angle?

Hopefully not sounding cynical just curious. But below will be the new ebay auction

2012P (NO P)
If the points are labeled sequentially in the counterclockwise direction the - In to T of trust-MintMark, This formula is known as the shoelace formula or the surveyor's formula.
If we locate the vertices in the complex plane and denote them in counterclockwise sequence as a = xA + yAi, b = xB + yBi, and c = xC + yCi, and denote their complex conjugates as , , and , then the formula= 001

We conclude this is a 2012p 1c ddo 001

Starting Bids $25.00


Seriously I like to thought of Identifying Errors with software

James

[pman860507]

Ok, Farmer.. Now I think you say you are using a cad program to identify varieties. I also suppose you have complied a database for different varieties.

Question: "Just a few, many others"
1.How long doesit take to build a useful database
2.What about variables in eds,mds.lds,vlds dies
3.What about no mint mark cents "coins"
4.Does this process apply to just certain types of errors. (Hub Doubled, mint mark placement)

Will we now have and error coin with a short or long Hypotenuse? or incorrect angle?

Hopefully not sounding cynical just curious. But below will be the new ebay auction

2012P (NO P)
If the points are labeled sequentially in the counterclockwise direction the - In to T of trust-MintMark, This formula is known as the shoelace formula or the surveyor's formula.
If we locate the vertices in the complex plane and denote them in counterclockwise sequence as a = xA + yAi, b = xB + yBi, and c = xC + yCi, and denote their complex conjugates as , , and , then the formula= 001

We conclude this is a 2012p 1c ddo 001

Starting Bids $25.00


Seriously I like to thought of Identifying Errors with software

James

I do think it would be cool to make software that can look at am image with a database of varieties/error and just what an varieties/error looks like. that can scan the image provided and spit out if its an existing error/variety or new one.

though about doing it but dont have the time....

with autocad you could write a lisp program that could do it but it would be pretty sensitive.

[hasfam]

I've been called a CAD before. Maybe that's why I like to attribute my varieties whenever I can.

Interesting subject, but it seems to me that it's only as good as the database.