by no means an expert, but it has ancient origins. Heraldry is all that rank and order stuff associated with royalty/ battle/ etc. It the middle ages the design of shields, standards, castles are full of images, usually battle or war related, but doesn't have to be. On documents, art, architecture certain motif's were combined with decorative elements, themselves also having meaning, that recur. A rosette carved in a mantle, an acanthus leaf cast in stone around a shield. Griffins and all types of mythical animals. All show up in Heraldic patterns. Think coats of arms. Flags. government seals.
Case in point, look at the back of a one dollar bill. You have the seal of the USA, itself a heraldic pattern. Note the shield in the middle and compare it to the image on the right below. note the vertical stripes. In heraldry, there were rules governing which colors could touch, so in the seal of the USA and this image, the red stripes are bordered by white, same as in the USA seal. The small sprig-like leafs are likely olive leafs, now look at the right talon of the eagle. I don't know if these flowers are supposed to be roses or tulips or whatever, but essentially they would all mean something. the one on the left looks like a rosette, but maybe based on a different flower. On the dollar, note all the acanthus leaf etched around the seal.
So, my inclination was to think that this was some take on a patriotic theme for PRL, because of the way the symbols were used.
And because I'm not expert on it, I don't know what most of the imagery means.