I don’t know the answers to all the pieces of the puzzle surrounding the Uncle Henry knives with the SCC+ tang stamping, but I can shed some light on some things.
I know that some of Schrade knives with the SCC+ tang stamp were made in the Camillus factory, but I do know that all of them were.
In a conversation with Tom Williams a couple years ago, Tom told me that Camillus made the Electricians knives for Schrade that were stamped SCC 204. I think those also had the + in the stamp. I have one somewhere but don’t have time to look for it just now; I think the stamping on it is SCC+ 204.
Tom told me that Camillus made most if not all of Schrade's Electrician knives.
Camillus also made the electricians knives for most of the US Knife companies including Imperial, M. Kline & Sons, Case and many others.
I also have an Uncle Henry stamped SCC+ 886
I know that Camillus made other Uncle Henry knives for Schrade and used the SCC+ stamp on them.
Here you see a S-card from Camillus, courtesy of Tom Williams. The S-card is sort of the factory guide to building the knife. These were used in the factory itself in the process of building the knife. This card is for the 898UH.
If you look just above the lower right hand corner of the S-card you will see the line that says "STAMPED." This tells you that these knives were to be stamped SCC+/ USA 898UH.
Perhaps The knife Keith shows above was from this batch in 1979.
According to Tom, Camillus often made knives for Schrade when Schrade was busy and running close to capacity. Albert Baer would then have Camillus make the Schrade knives.
From a Mr. Baer's point of view, it only made sense. Why pay overtime at one factory when you had another factory that had plenty of production capacity that was not being used.
If you have a knife that has the SCC+ tang stamp, you can confirm that Camillus made it if you can see the pivot pin in the bolsters. Schrade used the Swinden Key system on their multi-blade knives and on their single blade linerlock knives that were made in their own factory. Since they were the only company who ever used the Swinden Key system, it is pretty easy to tell if they had Camillus make the knife for them. If a multi-blade Schrade knife is made with pin-through-bolster construction (and it has not been re-worked), then it is most likely made by Camillus, or in rare instances perhaps, another company. At least you can be reasonably certain, (as certain as you can be with Schrade), that the knife was not made in the Schrade factory.
There are more chapters to be written about the mysterious Schrade knives with the SCC+ tang stamps.
Perhaps this will help to answer a few questions, but it is likely that it will raise as many new questions as it answers.
For every question answered or mystery solved about Schrade, it seems two more will pop up!
Welcome to Schrade collecting.
Dale