Higher alcohol can be due to humidity where where water evaporates before alcohol OR the 2014 edition was diluted..
Could have been the same cash, as it could have been a huge wine cask.
Shinanoya's release may have been bottled at 1.8-1.11 years later but released a few months later than that due to release conflicts or label errors.
Aside from that, it could also just be a printing error on one of the labels
I'm in need of some education here, if anyone can help, on cask numbers.
In 2014, Eigashima released a 4-year old Akashi White Oak whisky, aged in white wine cask, cask # 61091, 54%(https://www.whiskybase.com/whisky/54655/white-oak-2010).
Two or three years later, in 2017, Eigashima has now done an Exclusive 5-year old bottling for Shinanoya (http://shinanoya-tokyo.jp/shop/shopdetail.html?brandcode=000000007457&search=akashi&sort=) which is also Akashi White Oak whisky, aged in white wine cask, cask # 61091, 59%.
The two are both distillery releases and have same: distillery brand, cask type and cask number. But: the one released 2-3 years later is only one year older, and has an even higher alc. I cannot read Japanese so I guess I am missing something here?
Here is the official feedback from Yuki Urabe, Eigashima Shuzo:
First, for both of the products, we used white wine cask #61091 to finish. We didn’t mature whole years in white wine cask.
For the former product, we distilled in 2010, then matured in other cask for 3 years, and then moved the whisky to wine cask #61091, and matured for 1 more year.
On the other hand, for the latter product for Shinanoya, we distilled in 2011, matured in other cask for 3 years, and then moved the whisky to wine cask #61091 right after we opened to bottle for the former product and emptied the #61091 cask, and matured for 2 more years.
To tell you more, we have always used white wine casks to finish.
We have never matured in white wine casks from start to finish.
Thank you much for following up and getting an official response to this. I must say I am amazed WB Admin would do this. Slainte Mhath to you!
And now to the response itself. Mmmm....