Manufacturing dates of five 50ml bottles of Sailor Jentle Shikisai ink I'm using

In reply to:

https://www.fountainpennetwork.com/forum/topic/365504-sailor-jentle-50ml-bottles/

These are five of the nine 50ml Sailor Jentle Shikisai ink I have in my stash of opened bottles. The other four have production dates some time in 2015.

I didn't bother digging out the twenty unopened bottles I have stashed under the guest bed to inspect, but I suspect most if not all of them were produced in 2016.