Any sign collectors out there? I have about 200 myself that I've gathered over in the last roughly 20 something years. Pretty much I stick to route signage exclusively rather than things like gas or oil. Picked out some recent new additions in the last couple weeks:

US 127: This is off an overhead guide sign and has 45x36 dimensions. I have I-75, I-69, US 13 and US 24 all in 36x36 form but the three digit 127 made this the largest sign I have. There is actually a surprising number of rivets still on the sign itself.
AZ 143: Kind of an odd bird with the Sky Harbor Expressway considering it is only about 4 miles long. I got a whole mess of AZ stuff from the same guy; AZ 69, AZ 195 and AZ 202 off the top of my head in addition to some Nevada on top of New Jersey signs.
I-44: This is the last of the US 66 Interstates that I needed and the closest collection that I have to "complete." I'm just looking for a I-66 and I-85 at this point.
Basically I try to collect routes that have some significance like places I've lived before, worked, spent a trip or had some sort of scenic value. Generally I try to avoid duplicates but sometimes I'll grab a couple vintages if the price is reasonable. Figured this would likely be something that people here participate in, I know that there are some traffic control people on here.