Help with unknown marks please

Hi All
I am new to this forum and am hoping somebody can help identify these marks on a couple of silver or silver-plated items. They are quite worn but they are as follows:
First appears to be- a knight’s head; letters lMP in possibly old-English; some sort of triangulated circle with gears; symbol A1; 3 letters - maybe ‘spc’.
Second is very similar: knight’s head; letters IMP; triangulated circle again; symbol H1.
Thanks in advance for any help. Cheers,

Hi all
Sorry, newbe mistakes, I seem to have downloaded the same pic twice. Here are some better images.
Thanks again, cheers,