Individual scans would help us to determine. Scan each stamp individually on a black back drop at minimum 600 DPI, 1200 DPI would be the best. The bottom 4 look like type V's but a closer look at the 1st stamp bottom row would help. Crop each scan to the edges of the stamp so we can see detail like this. Also get the 3rd stamp bottom row away from the others.

I use a free hosting site (Flickr) you can also upload them directly here.