First, it's not 25 mm, it's 25 ACP. Second, not very much. According to the Blue Book of Gun Values, the most it can be worth is about $50.00
100
10-1000 USD depending on specifics
25-65 USD
25 - 100, if you can get someone to touch it.
Raven pistols aren't worth very much. Less than $100 most likely.
25
Separate both sides from the frame with screwdrivers or the like. Then just wedge it away from the frame and pull it back away from the frame in the back, and it slides off after a little fight.
50-60 USD 50-60 USD??? When new the Lorcin sold for an average of $65.00, used (and the fact they are out of business) it would sell for about $25 USD. I have purchased 2 for $20 each at shows
25-50 USD
If you don't have an owner's manual, find a gunsmith.
Follow instructions in owner's manual
$25-$50. Sorry- very low quality firearms.
Low cost handgun, made in West Germany in the 1960s. Indifferent quality, they sell for $25-$50, depending on condition.