Does anyone know the significance of the letter stamped on the flat of early SA gas cylinders? Thanks. Information Warning: This is a relatively older threadThis discussion is older than 360 days. Some information contained in it may no longer be current.
The consensus is that it is some sort of inspector's marking OR denotes the type of coating used on the low grade stainless steel.JR
These two articles explain it.
30-06_mike, Scott in Indiana
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