Hello all, I have been collecting coins for a few years but only recently did I start being more serious about it. I prefer having types for my collection rather than different years or mint marks as I like having variety in my collection. However, I am a bit confused about slight changes in coins of the "same" type, whether I should keep them as separate coins in my collection or whether I should dump them in duplicate coin part I primarily keep for swapping, some examples of these confusing coins are:
2009 1 turkish lira which has a wide base for the number 1 vs the other years which have a narrow base: https://en.numista.com/catalogue/pieces6163.html
2000 2 belgian euro that has a slightly larger font for the year and the stars vs other years that have a slightly smaller font for the year (the link here doesn't show the difference but I will add a comment showing the difference when I have the time): https://en.numista.com/catalogue/pieces80.html
What about change in material while the exact same style is kept such as the Lincoln Memorial penny which was made of bronze from 1959-1982 but then switched to copper plated zinc from 1982 to 2008 or magnetic/non-magnetic types of the same design coin
A more obscure difference such as different types of edges and reeding (coarse/medium/fine) like the ones found in 25 Egyptian Piasters from 1993 https://en.numista.com/catalogue/pieces1825.html
What would you do in such cases? :)
