Thank you all for your responses! I have attached a cropped portion of the dealers image; it is a little crisper with better contrast. I can see how the small dot and larger bulb could be the hilt of a sword, but to me the 3 blobs looked connected in a shallow 'V'. Although I will say in the hand the small dot stands out the most.
I
had also noticed the spear, yes I think it is an impossible position unless there is a hole in
his tunic (or as otlichnik suggests abdomen!). My guess is that the spear was
engraved last. The engraver seems to have realised the problem and has attempted to half-heartedly place the spear in front of the tunic where it crosses the
biceps. The problem is this
area is in relatively high relief, so the spear above the shoulder would have to be
engraved impossibly deep to make any sense.