Please Help Evaluate

These are just a few stamps that are part of the collection.
I would really appreciate any feedback on them. Each stamp has information written next to them. But I am so new to this, I don't know if the info is accurate.
Thank you all in advance!

Top to bottom:

Strip of three US Scott 294 - 1c Pan American, 1901

U.S. Scott 644 - Burgoyne Campaign Issue (Saratoga), 1927

U.S. Scott 621 - 5c Norse American, 1925

Their value is dependent upon the condition of the reverse, especially the gum. But at best the strip cats at $50 with better centering than those show, the 2c at 3.50 an the 5c at $11 in better centering. That is catalog, but you should figure 20-25% cat unless the gum is pristine. Others closer to this material should chime in.

Sounds right. Just add the straight edge copy should be further discounted maybe by 50%. If they are no gum or regum examples then even more.

Thank you both for your eval.

I will include the back of the stamps below. One of these have hinge mark and seems to have org. gum. (#621)







Thanks again for your time! Any and all help is greatly appreciated!