Please help me to identify these WW2 items.

[Domenix]

Please help me to identify these items.
Are they all OK WW2 items?

[Komandir RKKA]

Small badge is late USSR.
Other - prewartime.

[Domenix]

Thank you for great info.

[Marcel Banziger]

The small pin is a 1950-1960's VLKSM (Komsomol) membership badge.
The badge with gasmask is a pre-war "OSOAVIAKhIM Ready for Chemical & Anti Aircraft defence" badge and the third one with the medical cross is a pre-war "Ready for Medical Defense of the USSR" badge.

[Domenix]

Thank you sir, for great Info.

[GREIF]

Komsomol membership badge is a very anterior model

[Marcel Banziger]

Btw, note that the OSOAVIAKhIM badge misses it screwplate.

[GREIF]

Komsomol membership badge is a very anterior model

Sorry , later of course