We have been searching through the posted picks of minis but cant find one that quite looks like this frame, motor by s/n seems to be either 74/75 or 84/85 has the old Tecumseh numbering, bike owner my son, The bike is known as Monster Mini 14 due to the monster sticker on the fender & 14 on the face plate. we now have 5 bikes yes he been bitten by the bug or have I? will be posting more as I get used to this site. We will be thankful for all of your expert knowledge in figuring out what we have here. can take more detailed picks if needed. Thanks