Re: Iver Johnson Serial Number.
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Serial C1929 should be a large frame third model made in 1909, the first year of upgrades for smokeless powder ammo. Most are .38s and the chambers should measure about 3/8" diameter. The correct ammo is .38 S&W (not .38 Special). A few were also made in .32 S&W Long caliber.
Last edited by hrf; 10-04-2012 at 07:57 AM..