We have a lot of 20 NOS small corks which measure about 3/4" in H x about 3/4" across the top and about  5/8" across the bottom.  They have been stored away for years.  There are a few with small damages as shown in my last photo -  1 has a corner broken away and the other I noted is more natural to cork but I thought I would outline it.  The majority are not damaged and I will be including 2 extra's in case I miss a flaw.   

20 Small Corks NOS