The gold cap cased variant of the 57GS series was first introduced in the the supplement to 1966’s No. 1 catalogue.
The transition from the 5722-9990 and 5722-9010 to the 5722-9991 and 5722-9011 is extremely confusing based on what we see in the catalogues and in the market today. Suffice to say, despite the 5722-9010 retaining the lion caseback medallion as found on the steel 5722-9990, the dial layout is that of the 5722-9991 (non-chronometer), which is only ever found with a GS logo caseback.
Thus, when we see in the 57GS represented in 1967’s No. 2 catalogue with a photograph of the chronometer-dialed 5722-9990, and both stainless steel and gold cap variants priced underneath, the gold cap watch being presented does not exist.
All 57GS with gold cap cases have the same non-chronometer dial, with the same layout as found on the steel 5722-9991, and whose dial code is 5722-9010 TAD.
We would expect to find that the 5722-9010 reference would have the 5722A movement, although as with the steel cased watches, one shouldn’t be surprised to come across one with the later 5722B movement.
Catalogues and other official Seiko publications
As mentioned above, the 5722-9010 debuted in the supplement to 1966’s “No. 1” catalogue, remaining in the range until its final appearance in 1968’s volume 2. Since the catalogues only include dial-side photos, it is not possible to distinguish between appearances of the 5722-9010 and the 5722-9011.
In addition to the above catalogues, the gold cap 57GS also has mentions in issues of the monthly Seiko Sales bulletin that was distributed to retailers.
December’s 1966 issue shows the watch priced below a photo of the 5722-9990 in steel. As mentioned above, the 5722-9010 does not exist in the configuration shown here.
November’s 1967 issue lists the cap gold watch under the correct photo of the steel 5722-9991.