I collect them a few different ways. One of them is re-occurring print flaws.
I think they give a possible look into part of the printing process. So far I haven't found any of them that occur with both a 150 and 350 back and
the 350's seem to occur in different groups. There are a lot of these flaws
in the set and I enjoy looking for and collecting new ones.
Konetchy with blue dot on cheek
Konetchy%20Blue%20Dot%20On%20Cheek.jpgKonetchy%20Blue%20Dot%20Back.jpg
Tenney with broken Y on jersey
Tenney PD150.jpgTenney SC150-30.jpg
Tenney%20Broken%20Y%20SC150-25.jpg
Pastorius with B- on cap
Pastorius%20B-%20On%20Cap.jpg
Pastorius%20B-.jpg
Gibson with blue dot over U on jersey
Gibson A SC 150-30.jpgGibson E PD 150.jpg
Goode missing part of C on jersey
So far I've only found this on PD350's but there should be some other
350's with this flaw based on patterns from other 350 flaws.
Goode%20Missing%20Part%20Of%20C%20-%20Copy.jpgGoode%20Missing%20Part%20Of%20C%20Crop.jpg