First, I want to thank anyone and everyone who have contributed in any way to this site, be it information or photos, as without you, I could not have done this. Here are the facts that I have discovered about all of this wonderful jewelry after years of collecting, reading and researching.
The chain on the lariat or bola style necklaces made by Selro Corporation and Selini are identical to the plainer face sets which are unsigned. And the chains on some of the more decorative style pieces of signed Selini are identical in style and size to the chain used on the same type pieces of signed Selro. (See my signed Selini rhinestone set and it's matching sister, signed Selro, right next to it!)
There are 2 types of female faces. One is much more ornate than the other is and some come in a pearl-like finish. Then suddenly the pieces come alive with detail and design and are either signed Selini, Selro or BOTH on one piece! The reason for this appears to be to distinguish between the two lines...Selro and Selini and they were both in manufacture at the same time.
In my research, I found not only the face jewelry to be similar or identical, but also the cabochon and rhinestone jewelry. I have photos or own pieces of both, which are nearly identical matches to other pieces, signed by with one designer name or the other.
It has been previously said that the owner of the Selro Corp. jewelry's name was Paul Selinger of New York City and the Selro jewelry was manufactured circa 1950-1960s. His name was, in fact, Paul Selenger, not Selinger. He worked for H. Pomerantz before going out on his own to design and manufacture Selro and Selini jewelry.
Paul's mother, was named Rose Selenger and he named his company after her. Selro jewelry came first. The phone was always answered "Selro" as this was the original company. Selini jewelry came somewhat later but both lines were manufactured at the same time in later years. The name, Selini, was just an attempt to differentiate the two different lines.
The jewelry was always very well made with all stones being hand set and the metal of the nicest quality.