Not really . Typeslugs were usually made by outside factories and might be sold to several unrelated tw manufacturers and , conversely , a given mfr or model often had several options available , so you might have a sample that ' s actually from a certain tw but is still unlike anything you have ever seen from that model . IOW , you might have a sample from a particular Remington that doesn ' t look like anything you have seen on a Remington but you have seen on Royals . Just chance in a case like that you can ' t have seen every possible combination . It ' s conceivable that there might be some convincing documentation in a mfr ' s archives regarding an exclusive typeface , but . As you say , it ' s easier and more reliable to match a sample to a particular tw , provided that you can find the tw . I ' m aware of the distinctive Vogue from Royal but have no confidence that they never used it on a standardsize tw . Also , most people are not good at noticing nuances of type design but I ' ll assume you don ' t have that problem . Why do you ask ? Detective story , or what ? What are the possible answers you have turned up ? What level of certainty do you need ? I ' m thinking of that Vogue , where the odds favor a certain range of portable Royals .