Thanks Cheryl,
I am not disagreeing with Sandy, you, or anyone. I am just trying to make sense of differences between known examples of unmarked Vollraths and my pan. Here is another difference between the Vollrath-branded item on ebay and my pan. Compare the cooking surfaces on the two. My pan is more or less uniform. The other (marked Vollrath) is machined.
Are these sorts of differences just par for the course? Presumably the Vollrath-branded piece was a higher end product; it probably makes sense that it received extra love from the foundry.