Red Cross Ship Badge?

[pjm]

I've had this for 25 years... never identified it. The disk is numbered. Can some one identify? I presume it is pre-WW2.

[wfrad]

Could it be a navy rating badge for medic?
I don't think it's the Russian Red Cross but have you tried asking the Russian Red Cross? if not, you never know you could get a reply!
Red Cross Red Crescent - Directory of addresses
mailto: mail@redcross.ru

[Komandir RKKA]

You have quite rare badge of OSVOD organization.
OSVOD means - Water Rescue Society (saving sinking people)

[pjm]

Thanks for the identification~!