1977 0.5 mm Opaque Complete Set

These opaque colored PD345s came out in 1977. The solid colors hit the market first with the transparent variations following soon after. The first round of PD345s held 0.5 mm lead and were available in black, blue, orange, yellow, green.  Complete sets of these are not too hard to find these days but are still very collectible and are a must have in your Pentel collection, especially if you're into Quicker Clickers.

These were available in the United States but were not nearly as popular as the transparent color versions. 

The solid colored PD345s sold through Pentel of America were known as the Pentel Quicker Clicker whilst overseas they were referred to as the Pentel Clic or simply "Clic".  The more collectible version of these are those with "Pentel Clic" imprinted on the barrel. 

Below is a page from the 1979 Pentel of America product catalog.