You'll know you've arrived when you catch auction houses making incorrect attributions.
Here's a WB5 misattributed as an I don't know what. To be fair, Bugert's first New Orleans mint reference hadn't been published yet and the cataloguer wrestled with one of the ten known Large O die marriages.
@Barberian said:
For example, create a flow chart such as the one below for 1840-O halves.
Obverse: w/ large dentils or weak date ---Yes--> KEEP (WB1, WB8, WB9)
No
Reverse: w/ small O ---Yes--> Reject
No
Large O far to the left* ---Yes--> KEEP (WB6)...also WB8 & WB9
No
DIe crack thru either D(OL), or mintmark, or zigzag near arrows ---Yes -->KEEP (WB2, WB3, WB13)
No
Mintmark above and "contained within" F of HALF**---Yes-->KEEP (WB14)...also WB13
Great info! That's what I'm wanting to get to. I'm an engineer by trade, so I get flowcharts . I heard about this new book written by Thomas Walker titled "Early Date U.S. Large Cent Rapid Attribution Guide", which does exactly that. He also is an engineer and talks about how he applied isolation method do develop a methodology for recognizing attributes quickly and a simpler process than looking up each coins every time. That really appealed to me. Now I need to get to studying and memorizing.
Comments
You'll know you've arrived when you catch auction houses making incorrect attributions.
Here's a WB5 misattributed as an I don't know what. To be fair, Bugert's first New Orleans mint reference hadn't been published yet and the cataloguer wrestled with one of the ten known Large O die marriages.
https://coins.ha.com/itm/seated-half-dollars/half-dollars/1840-o-50c-ms63-pcgs-pcgs-6235-/a/1139-898.s?ic4=ListView-Thumbnail-071515#
Here's a WB4 misattributed as a WB12
https://coins.ha.com/itm/seated-half-dollars/half-dollars/1840-o-50c-medium-letters-wb-101-die-pair-12-r6-xf40-pcgs-pcgs-572003-/a/1258-5064.s?ic4=ListView-ShortDescription-071515#
Great info! That's what I'm wanting to get to. I'm an engineer by trade, so I get flowcharts
. I heard about this new book written by Thomas Walker titled "Early Date U.S. Large Cent Rapid Attribution Guide", which does exactly that. He also is an engineer and talks about how he applied isolation method do develop a methodology for recognizing attributes quickly and a simpler process than looking up each coins every time. That really appealed to me. Now I need to get to studying and memorizing.