555 timer ic self clocked no caps or resistors.
interestingly this behaves like the famous nikisallis multivibrathingamajig.
I will test this on the board, and will be highly surprised if this even works.
I board tested it it works, and clocking @ 1.6667 MHZ (corrected by guru @hurz)
But exhibits convergence problem in EC, in real works fine.
I think is worth re posting for more interest on @yra's new oscillator.