Cases For NCLT

I was wondering if anyone knew who made the cases for the coins the mint packaged stuff in circa 1980.

I ask because I was going through junk I bought in bulk and one of the items is a 1980 set of what appears to be uncirculated business strikes in a leather and wood case with a gold Canada sticker on the top. On the bottom it's marked "Renwick" in leather circle embedded in the wood. Inside is a plastic tray lined in fake velour stuff the same consistency as what I find in clamshell cases and it's shedding on the coins and has toned them the same way.

Renwick was apparently a fine luggage and briefcase maker in Canada going back quite some time. They seem to have been absorbed by some other luggage maker pre internet era.

Do you know if they made all the mint cases and what not?

Obligatory picture;