Jade Heart with Swastika

[Grusome]

I am trying to identify the likely source for, and date of a jade heart, with gold shoulders and suspender, faced with a gold swastika. It measures about 2.5cm NS and EW. There is a plate on the back of the shoulder which seems to have, in a horizontal row, an unidentifiable (but may be a bird with outstretched wings) object, a 9, and a W.
It was very likely brought back after WW1 from Europe.
I assume that it is the Buddhist swastika, and the W may mean manufactured in the 1890s. Presumably the 9 is 9K.

 

[Grusome]

Further to the above.

 

[Arkteia]

Could be Hindu, Buddhist or Jain.

Could be British, Canadian, German, Polish, Russian and from most other Western countries.

Could be a later addition to a beautiful pendant. Who knows?

https://en.m.wikipedia.org/wiki/Western_use_of_the_swastika_in_the_early_20th_century