Hi there,
if you want to become a real member in this forum introduce yourself in the section of new members.
Abour your questions, I collect patches since 1989 and have a big lot from around the world. If the collection you have is from the 70's than there will be a few very worthy patches in the lot. Maybe I can help out if I can see pics. Most non serious collectors sell their patches on ebay, there are sometimes prices of 100+ dollars for one patch in the auctions, if it is a rarity.
take care
Evenhand (Cop Movie): You can't be everybody's friend
There are two things I'm good in, the second is arresting people
I'm looking for Drug/Narcotic Unit patches together with DUI/DWI unit patches for a frame in our Anti-Drug-Team bureau
Also looking for Massachusetts Police and US Capitol City PD patches now!