The bottom one is definitely fake. The font on the hangtag is wrong and
Coach never made that style. And of course the C pattern isn't centered right.
Give me a few minutes to check on the other one, but if it was MFF (Made-for-Factory) I may not have it in my files. The font used in the Coach stamp looks "off" to me though. More opinions on this one are welcome.
Do you own these or are they in a sale or listing somewhere?
EDITED TO ADD - the second one looks like style 7345, and the logo font might be because it's an older style and early keychain fonts weren't as precise as newer ones. Coach's photo is below: