Depends on what your interests are, but personally I wouldn't bother with lot #1, only common coins I find everywhere. Auction #2 has the 1910 Swiss ½ Franc, a scalloped coin hidden under the French 10 franc piece. It has a dirty coin aswell that I cannot identify but doesn't ring my silver bell. (coin partially covered by the flip) Otherwise there's nothing in it in my opinion, but this is the best one for sure. Autcion #3 only has a canadian dollar in it that's of any value, the rest is essentially junk.
Bid as you wish, but I'd say go low on the second lot and avoid/go low on the rest.