Oregon Pacific Building, 1898
Vice President Thomas Marshall in 1917 supposedly quipped, "What this country needs is a really good five-cent cigar." I don't know if there ever was a Good brand cigar that was advertised for five cents, but this could be it. The word "Good" and "5c" are visible on this sign but the rest is not readable or visible.
You can see this sign from the same garage vantage point as my previous post. It's on the south-facing wall of the Greek Cusina restaurant at SW 4th and Washington.
2008 (from the Yeon Building):