Interesting Review. I would love to have a box like this in my collection.
I did a little research on Coast Cigar Company.
Came up with an ebay listing for a La Natividad Match Book.
http://www.ebay.com/itm/NATIVIDAD-CI...-/200643041807
If you look closely you can see "Coast Cigar Co
San Francisco"
So I then dug a little deeper and found a business listing from 1949 in San Francisco under "Coast Tobacco Distributors"
http://www.archive.org/stream/polksc...e/390/mode/2up
Connecting the dots here... assuming that the Distribution company in San Francisco is somehow linked to this 'Coast Cigar Co' and given the fact that most Clear Havana's that I'm aware of were made in Tampa (Ybor City) it seems unlikely that these were clear havanas and more likely that they were just your average 5c cigar.
But, that's all a stretch at best. Interesting stuff though.