Anybody know what original ceramic caps in DD2?

I'm trying to determine what exact type and what brand of ceramic capacitors originally came in the boss DD2 delay. Mine say 104 25v KCK. I'm thinking those aren't original because if "KCK" is the manufacturer than they can't be original since that company (KCK) started in 1987. My pedal was manufactured in Dec 1984 per the serial number. I've looked all over the Internet and cant find the answer to this

What do yall's ceramic caps say? (the big flat brown'ish orange ones)