I can see why that line of Remington models would be attractive to collectors. I have a 513-T TM and a cool little 512X I won at auction when no one else bid on. Good for rats and such. Have the slightest little ding in the magazine tube and it's the only thing I see when I handle it, so I'll be addressing that at some point. I'll keep my eye's peeled for a local Routledge, I assume you saw the one on Gunbroker.