TR Handpump

[N14J]

Hi there. An antique dealer asked me to help learn about this item, but so far I've mostly come up with dead ends.

It is a bronze or brass handpump. The body has a plate inscribed with "EDO 32 RIGA" and two stylized swastikas. The handle has EDO and swastikas on one side, and RIGA on the other. The handle but not the body has remnants of blue paint. The pump will not pump water, presumably because it's missing a seal. The hose that likely attached to the output is also missing. The side has a plate with two holes, presumably for mounting. Does anyone know what kind of boat this could have been attached too? The TR occupied Riga '41-'44, but I don't know if they built or fitted any ships there.

 

I can't get the photos to embed properly, so here's a link to them: https://drive.google.com/open?id=1zp6jFzc5RqvduBfw32jph8i8je6Wgr_q