Regarding RWS dots, I offer the following:
The use of “dots” with RWS headstamps dates back to the early 1900’s and almost every conceivable combination is known.
When RWS used the “N” hs (= Nürnberg used from c1909 - 1930’s), they used:
There are also (in a variety of font sizes and spacing’s):
RWS. (noted by 1937) . Also listed by Norma in 2007 as produced by them.
And even dashes with dots (very early) :
I have assumed that the dots were used to distinguish “lots” in some way but that is just a guess.
Regarding the “R” :
" In 1922 the policy was introduced in Germany that the designation of “R”, indicating that the cases were rimmed, was also required.
Examples: 9x63R M88 8x57 JR (Example E in images)
However, the inclusion of the “R” was not introduced on hs by DWM until likely late 1925: eg “DWM V V /M/93B/7x57R/” which is the only “V V” (ie 1925) dated DWM sporting cartridge using the “R” in the hs. It was certainly common practice in 1926, where all the rimmed DWM cartridges have the “R” included. Note that there are always exceptions because in 1927 both “DWM T T /455/8,15x46/” and " DWM T T /455/8,15x46R/" are known but this is a rare exception.
NOTE: In Austria, this policy doesn’t appear to have adopted as even 1939 HP catalogs still omit the “R”. "