Tomy Plarail C62 variations?

[ripley802]

This is in the C62-18, which is also on the C62-1/2 in the silver swallow set. I would assume this is the Silver swallow symbol?

Sort of hard to tell in these images but it looks like a bird or sorts:


But something to note that in this set with the C62-18 it has Grey side rods where as in the C62-1/2 silver swallow set they are red in the drive engine and grey on the sound engine.