Ajman: Any Idea For Trial Print's Value

Here's a new catch! I think it's trial print
Any ideas about it and its value?

Well, normal stamps from this issue worth next to nothing. These may worth a little more than nothing.

Ajman is one of the poster childs of "Sanddunes issues". They had everything printed onto stamps, usually with no connection to the country itself. Usually hundreds of stamps every year, and likely none of them ever saw the country from the inside..

Your stamps are progressive proofs, as Ajman not only issued tons of stamps, but also the same stamps imperforated, proofs, progressive proofs, souvenir sheets, etc..You can find these and similar items on the ebays of the world, people desperately trying to get rid of these "stamps".
Genuinely used stamps on non-philatelic covers are a different matter, though.