It all depends on the version and condition of the model 25. There are about 17 different versions that were made over the years
$15.00 to $25.00
Are you aware that the model 25 is in production again. There are 21 different variations of the model 25 before the new one came out. So here is what I suggest. Daisy has a service to evaluate older Daisy air guns. See the link below
Daisy. I believe it may be a model 25 made by Daisy for Sears
This is a Daisy model 25. Without knowing the condition of the rifle it is not possible to give an estimate of value.
The Value is determined by the current condition and age of the rifle. There are about 17 different versions of the model 25. Next to the Red Ryder it's one of the most produced air rifles by Daisy. With out seeing the rifle it's hard to determine the age or condition and setting the value is not possible.
First you have to tell us what condition the rifle is in. Is it Excellent, Good, Fair, or Poor. Without this information it is impossible to give you an estimate of the value.
There are over 16 variations of the model 25 to date. In fact it's still in production. It is the most produced model after the Daisy Red Ryder. The value is placed on the particular variation, current condition and is it still working. Therefore it is not possible to answer your question. Without more information.
All Daisy model 25's load the same. You unscrew he end of the barrel and pull out the loading tube. It's pretty self evident when you see it.
Do a search on the web for "Daisy air gun repair" or try the link listed below. Daisy is making the model 25 again you can also try daisy, see link #2 below
There are about 25 different models of the Daisy Model 25 that have been made over the years. I suggest you contact Daisy directly and ask them. They offer a free service to tell you more about your old Daisy. See the link below.
25 USD or so
Daisy NRA Centennial model 5894 (POOR condition) $40, 1971-72 Model 1938 B 50th anniversary $25, 1988 Model 1938 Diamond Anniversary $15 , 1998 Model 1938 Millenium Edition $15, 2000 All of these prices are the Poor condition value for this rifle.