May be my computer, but looks like some bluing loss on the barrel. I'm not real familiar with Flaig rifles, but $550 seems a bit high for a sporterized Arisaka...any chance the mum is still intact?
Definite bluing loss, not just your computer. Too hard to tell from these photos I have for top of the receiver to know whether the mum is or is not there. If I get a chance to ever see this in person (scheduling with seller hasn’t worked out) and get better pictures I will certainly post.
