[D.P.Johnson]

I'm not familiar with how vintage cards were printed, but is there a standard reason why some cards were printed with the wrong back???

My guess would be that the cards were printed on one side first and then the sheet was turned over and placed incorrectly back on the printing press???

(This question is specifically referring to cards with one player listed on the front and another player listed on the back.)

Was the printing process changed at some point so that cards are no longer printed with the wrong back or is this phenomenon still occurring today???

Thank you in advance for any responses...