Vintage stomp boxes, one classic Japanese make and two reissues made in Sri Lanka
The positives of these cheap little guys by far outweigh the negatives, mainly the plastic casings and battery covers that can easily pop off and go missing. But on the positive side, these are all stereo pedals. I've found that the delay works better for vocals, but can also produce some freak out noise for guitars. The four-knob flanger (the vintage Japanese pedal) has a little more flexibility than many of it's competitors and while the Overdrive pedal isn't anything special, one thing it has going for it is that the noise level is very low.
Thanks for looking, more high-resolution photos here.