Page 14, Star Dagger S-2. (2011 PDF)
The first two sentences of the first paragraph do not make sense unless "Sabre SB-27" is used rather than simply "Sabre":
"Originally a Terran Hegemony design, the Star Dagger was sold to the Draconis Combine in the early twenty-fourth century when the Hegemony upgraded its aerospace fleet. Despite the sub-optimal performance of the design, its inexpensive nature enabled it linger as the Combine’s premier light fighter until the introduction of the Sabre centuries later."
The first Sabre, SB-26, was introduced by the Alliance of Galedon in 2314, which is early twenty-fourth century. (TRO:3075 p212.) Even if the 2314 date is in dispute, it occurred prior to Shiro Kurita's death in 2348. Presumably, the cheaper and more versatile Star Dagger (model S-1?) enabled it to become the premier fighter, while the fuel-limited Sabre SB-26 was relegated to militias as stated in TRO:3075. If the above statement is taken literally, then sales of the Star Dagger could not have commenced until at least 2319, five years after the Sabre was introduced, not centuries before. Even interpreted loosely it could only have been first sold a few years prior to the Sabre's introduction, not centuries, and to the Draconis Combine's predecessor, not the Combine itself.
The Sabre SB-27 is introduced in the 26th century (2519), satisfying the centuries later comment above and making for a better explanation of Level 1 tech replacing Primitive-level tech. Now superior to the Star Dagger, it would become the main light fighter, pushing Star Daggers to militia (and older SB-26s to the scrap heap) until the Sholagar comes along.