The possibility exists that the initials "R.L.(script?)" are for R. Langenhan of Zella-Mehlis, a decendent of Valentin Friedrich Langenhan of Mehlis, then Zella Saint Blasii, gun and bicycle maker. But I'd put my money on Richard Luck of Gebrüder Luck founded by Franz August Luck in 1879. Post WWI Richard Luck had partnered with Ludwig Wagner which evolved into Luck & Wagner by the early 1930s. They too were into guns and bicycle parts. All hinges on the initials being "R.L.".
Kind Regards,
Raimey
rse
