The 52-4 looks similar to the Saturn 6551 (the same supplier supplied the dome) however it mounted to the housing with a clamp ring instead of the 3 hold downs. These strobes were sometimes mounted on spring isolators. Like the 6551, it was offered with the amber or whiteish/yellow dome. CNW, UP, MKT and others extensively used this style of strobe light. One of the most common strobes of the 1970s-1980s eras.
4 unpainted clear parts per sprue with 1.3mm mounting pins.
Instructions for lighting are provided on the packaging. We will have a blog post on how to use our strobes and beacons in the near future.