This is really helpful. Thank you. Now I understand better what the 'rough'part around the hole means. I understood from Hendrik that this large cut is also typical for Indonesian beads.
Joyce mentioned that round Venetians were made.
I will have to re-examine the"Baule" beads I have, I thought they were genuine Venetian tabulars since I bought them from trustful sources.
They are the ones at the bottom of the strand.
Again, I learned a lot :-). Thank you!