The Grand Seiko 4420-9000 is rightly considered to be one of the landmark releases of the vintage Grand Seiko era, and the watch today is considered a true icon of the brand, with the design language it introduced continuing to have significant influence on the design of Grand Seikos even to this day.
The 44GS series – the first Grand Seiko to come from the Daini Seikosha company – was on sale for only a short period – debuting in the supplement to 1967’s Number 2 catalogue, and making its final appearance just one year later in the second volume of the 1968 catalogue.
But even within that short period, Grand Seiko released two versions of the stainless steel cased 4420-9000.
The second variant of the 4420-9000 to be released is shown above, and can be identified by the fact that the “Diashock” text on the dial has been replaced by the Daini Seikosha company logo.
This late dial variant made its sole catalogue appearance in the second volume of the 1968 catalogue.
Whilst only appearing in the single catalogue, as opposed to the two that the early dial variant did, it would seem from what we see on the market these days that this later dial variant was produced in higher volumes than the earlier one.
We currently have an example of this reference available for purchase, which can be found at the following link –
Catalogues and other official Seiko publications
The later dial variant of the 4420-9000 makes its sole catalogue appearance in the second volume of the 1968 catalogue, a link to an article on which follows –