it seems we have a problem with what makes these, some things are bizzrare some things are obvious, so i have split them into 3 categorys depending on how easy they are to spot. i have some pictures in each. type 1 - the obvious this of course is the easy to spot varierty where the coin looks "differant" without comparison to others needed, most of the earlier stuff would be in here (roses plumes those sort of things) and possibly the 1895 2mm being at the border of this to type 2, this category would also fit for SOME early bunheads especially the narrow date varietys, mules would also go here. type 2 - the trained eye. this is the main category, this is where we have slight changes to coins that you may miss without comparison (tides, 1895-96 shilling roses, most bunheads, date sizes, pointings to teeth) these are generaly established varietys but some seem to have been ignored and should really be listed, this is where decimal coin varietys go (the dot allignemnts and 1992 20p head sizes) this is where most of the varietys we have, sadly most of these are undervalued due to unlistings in most books, the 1858 small date fartihng being the best example. if you had the large rose shilling you can see the differance in rose size, while listed in CCGB in some major books this isnt listed which leaves some obvious varietys indervalued. this is the category type 3 - the dyes this is the most controversial, we have some obvious varietys that are listed that are surly only die errors (filled colon dots, etc) a few of the 1700-1800 coppers have listed "dotless" which is filled dyes, and the RFG and 2 pronged trident could be similar, yet we get filled colon dots elsewhere and its not a variety. what about this? there is an obvious diferance between this and 1845 reverses in the fact that its FID. the DEF: exists but there is no sign of a dot to make it a colon on FID, there are FID. reverses in the farthing series (in fact 1839 2 prong trident has it, and 1840 has DEF.) so is this worn dye? this coin is unlisted from what i can see, yet it has characteristics of varietys of other listed farthings. type 3 is the one we need to clarify properly its hard to keep track of this category, due to certain varietys being listed yet similar ones being classified as errors