Codex Vaticanus Graece 1209, B/03
Observations in the Old Testament
715 A 24 L
e.g. p. 987 C / 992 A / 996 A,C / 1000 A / 1003 B / 1005 B / 1028 B / 1029 A,C / 1032 B / 1034 B / 1035 C / 1038 A,C / 1040 B / 1041 C / 1046 C / 1050 B / 1051 A,B,C / 1053 B,C / 1054 B / 1055 A,B / 1056 B / 1058 A / 1060 B / 1061 A / 1062 B /
Contra Payne there are umlauts in the OT. Albeit I counted only about 15. Are these of the same kind as those in the NT? I don't know. But I am tempted to assign them to variant signs. Even with the limited Rahlfs apparatus I found variants here. Of 14 safe umlauts I have found variants for 10 of them.
The interesting sign is what might be called a triplet. Three little dots arranged as a triangle. I have found about 75. Again, there are probably more. The last one I have found is on p. 875. The sign is very small and I have found about 22 (28%) which are not retraced and very faded. I am not sure what these are. Spot checks show variants here too. Nevertheless it appears that more than what one would expect from randomness appear at the beginning of a sentence, rarely paragraph though. 14 are on the first line of a column. I am not sure what to make of this.
Now, what is most interesting is, that on the first page of the supplement for the Psalms
(p. 695-704) there is one such symbol, too.
Remember that on the first page of the NT supplement (Heb, Rev) there is an umlaut, at approximately the same position. No further umlauts/triplets can be found in these supplements.