A word of caution: (although my frame of reference is the WWII Period) – the ‘standard’ fonts and setting out diagrams were interpreted by the manuafcturers in different ways – they all had their own distinctive styles and often there were differnces between individual factories and even production batches. Also some were applied as stencils (and therfor had ‘twigs’ breaking up each letter/number) such as later Castle Bromwich produced Spitfires and others were sign-written – in solid letters. Generally when creating artwork for a serial (if I don’t have a period photo of the aircraft in question) I look at other aircraft nearby in the serial range. For example there are differences in serial font style between different production batches of PR.XI Spitfires and so for PL965 (in the absence of a photo of the serial) we have found examples of aircraft that were produced near her manufacturing date and followed the style of those.