319 Shanghai Street [c.1926-c.1988]
This is the original location of the shop 老實公司 Lo Shut (i.e. Honest) Company from 1926 to 1988.
The shop moved to Reclamation Street in 1988 and closed in 2010.
Here are some links to further info: http://www.hkmemory.org/old-shops/text/index.php?p=home&catId=43&photoNo=0 ; https://zh.wikipedia.org/wiki/%E8%80%81%E5%AF%A6%E5%85%AC%E5%8F%B8
I'll try to invite people closely related to the owner, Mr Mok, to add more info about this very old shop and part of Hong Kong history.