Thanks!! I appreciate your comments. It took a while, but it was worth the effort. They all have matching numbers and two (the two B|90) have matching magazines.
It's an interesting progression of inspecters from the K-Date B|90 & S|91 through the double DE/63. They settled down for a long haul through the 1936 into the mid 1937 year, then SE/63 came to town until the end of 1939. Probably the same inspection team, but just a change in the die from DE to SE.
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