Gertenberger made inexpensive revolvers in Gussenstadt West Germany in the 1950s. Most were banned from import when the 1968 Gun Control Act was implemented. Values, sadly, are low- $40-$75- maybe $100 for a new-in-box specimen.
I have one and just got the following info. I can't swear by it, but it seems ok. Omega Model 100 made Early 60's by Gerstenberger & Eberwein Co. West Germany. They also made a similar or maybe same gun as a "EM-GE", Model 22-KS
No published sn data.
it is a Model 39-2 9mm pistol
A Daisy pistol model is a hand held gun like the model 15XT that shoots BB's
Between 1921 and 1982, MAB made several pistol models in .25: model A vest pocket pistol model B vest pocket pistol model E pocket pistol model GZ pocket pistol (actually made under license by Spanish gunmaker Echasa, as MAB Espanola) The value will depend on which model it is, which version of that model, and condition. Since 2010, the range for the above pistols is about $50 - $300.
Pistol
Excellent quality pistol
no colt made the 1902 pistol
Medium
acp model
I am not familiar nor do I know of an H&R Model 943 "pistol" - could this be a Model 949 revolver?