Can't read the clip on the green one, too blurry, but it certainly looks to be of the correct era. Universal is a very obscure brand, and is definitely pre-war. They are considered "third tier" pens, a term which describes confusingly both small pen companies and cheap low quality pens, sometimes, but not always, both at the same time. Third tier pens are often noted for their striking celluloid patterns, like your Universal, an attempt to grab the attention of the consumer.
Antique store fountain pens are nearly always overpriced, because they inevitably put professionally restored prices on poor condition pens. But I have gotten lucky before. Thousand dollar pens are really collectors items, not pens. Most of the time you are somewhere in the 2 to 3 digits.
For the record Henry's pen in Last Crusade is a Conway Stewart 58, anachronistic as it's from the 1950s.