Rebranded Variants: the Colt Pony, Iver Johnson .380 and FI Model D
FIE version of the Star model D .380 pistol
In the middle 1970s, Colt decided to offer a .380 auto, and chose to partner with Star instead of making their very own gun. The gun (to be called the Pony) was to be assembled in the US, presumably by Colt, from a Star DK slide & associated internals, with a U.S. made frame. Some reports specify steel, but if this is a DK, the frame should be alloy. Part of the US manufacture and frame was due to the 1968 Gun Control Act, which placed restrictions on importation of small handguns.
For some reason, after this product was announced, the Colt/Star partnership was dissolved and very few Colt-branded guns seem to have been sold. Iver Johnson bought the U.S. manufacturing rights to the gun, and sold a number of them. Apparently quite a few frames were made in anticipation of the Colt deal, as all the early Johnson serial numbers start with "CPA" (Colt Pony Automatic). It is also possible that some slides were made in the U.S. by Iver Johnson (some manufacturing marks and methods vary), but all the small parts were Spanish imports by Star. Iver Johnson also made at least one commemorative edition based on the Model D Pony, for a US Border Patrol anniversary in 1994; these all have "USBP" serial number prefixes.
Colt model Pony with original box and warranty card
This gun was also sold under the Starfire name, though I am unclear if this was a pure Star pistol with the requisite modifications to be allowed under CGA '68 or was simply another brand under the Iver Johnson banner. All of these guns are identical to the DK models discussed above. FI also sold the model D as an FI-made gun (Firearms International, not to be confused with FIE), with the model D designation. No Star branding or importation marks appear, so this may also be a related endeavour where an essentially Star pistol is sold under another name entirely. There are some reports of FI selling the import-marked version as the "Garcia Model 30" as well. This appears to be the same gun, just marketed differently, and presumably (due to the importation) made by Star and simply imported.