DWM Commercial ID and Value Help

[Good-Day]

Well what do you know look at that!!!!!!!!!!

Good thing I have not tried to fire it yet

BYF 9mm on the left, and the DWM on the right and apparently a .30

Could have sworn it said 9mm when I got it I checked the sales invoice and it says caliber not marked

Looks like I have some deciding to do. Buy some .30 or sell this one

THANK YOU very very much!