Capacitor identity

So i have some vintage capacitors that are almost teardrop shape. Some have a plus sign on one side but some are multi color with nothing else written on them. Are these tantalum? I tried to upload pictures but keep being told the´re to large.

I dont know anything about capacitors or tantalum but maybe this is helpful

https://www.scrapmetalforum.com/scra...tor-scrap.html

that was very helpful. i was able to go to their facebook page and found every type of capacitor i had.