Hmm

[BottleEnthusiast]

I was walking to woods the other day and came across a 60s/70s dumpsite. But there were some 1920s ketchups and that is all from that era everything else was way newer. Any reasonable answers?

 

[Dogo]

One possibility is that the older bottles were thrown out with the newer during a general cleanup. Sometimes we find old stuff in an attic or basement and get rid of it then.