I posted this comment about the M177S & JLC MC similarity on another thread about the M177S:
The JLC Master Control itself is an homage to the type of watches JLC and many other Swiss makers were producing in the 50's/60's -- a general sort of Swiss style from the 50's/60's. The thing is, that style influenced the style of Chinese watches back then, as well as that of the Seiko and Grand Seiko watches even today. So while the Seagull is undoubtedly an homage to the modern JLC Master Control, it is also a homage to a traditional style of Chinese watches from the 50's/60's. That gives it legitimacy beyond just being a Swiss style homage.