The silver rectangle thing is your oscillator/clock generator. I don't think your system will work well unless it is soldered in properly. Is it?
AFAIK Apollo didn't solder the crystals. If the crystal is pushed all the way in the card will work, mine did for 10 years, till one day after moving my 1200, the crystal fell out ( no trapdoor cover, to cool the card). If the crystal dislodges when powered up, it can harm the cpu. It happened to my Apollo 1240.