What does ルツクハ mean?


I found this written on a blue bottle. What does it mean?

> ルツクハ




ルツクハ is ハクツル（白鶴） written in reverse order. Japanese was written from right to
left in horizontal writing until mid 20th century. Some labels still use the
system to express their tradition and authenticity.

白鶴 is a famous sake brand. According to the company's website, the name has
been used since 1747.  
<http://www.hakutsuru.co.jp/english/company/history.html>

