Trying to ID a magazine

[BC38]

I know it is for a S&W single stack 9mm.
I picked it up at a LGS thinking it was for a 639, but it is one round too short - holds 8 instead of 9.
Other than being 1 round shorter it looks just like the magazine in my 639.
It is stainless with a red follower and black plastic "pinky extension" base.
So what model would this magazine fit?

 

[Bob L]

Maybe a 3913?

 

[BC38]

Maybe a 3913?

Well that didn't take long.
I just looked up the 3913 magazine on GunBroker and that's it - you nailed it!

Thanks,
Bob

 

[18DAI]

I agree with Bob. That appears to be a 3913 mag. I guess you will need to purchase a 3913 now. Regards 18DAI

 

[BC38]

I agree with Bob. That appears to be a 3913 mag. I guess you will need to purchase a 3913 now. Regards 18DAI

LOL, I don't think so.
But I'll trade it for something I need, like another mag for my CS45 - or maybe just sell it.