I owned a gun shop in the 1970s, and all the Model 39-2s, whether blue or nickel (factory offered both finishes, but produced mostly blue 39s, with nickel 39s comprising the distinct minority of production), were supplied with blue magazines. I kept one NIB for many years, until it was lost in a burglary. I recently replaced it with another nickel 39-2, which, of course, has blue mags.