What bike company uses USD as first 3 digits in

1972?

https://www.google.com/search?q=huffy+serial+number+lookup

..

A simple Google search for "Schwinn Paramount serial number: yields the following as the 1st result: Schwinn Paramount Registry Database It appears that only in 1966 did the Paramount use a 3 digit serial number, and one of the examples also starts with an "e".

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

It would be helpful if you included a model name, but all you have to do is Google Murray serial number to get lots of info, such as: Murray serial number project
"In 65 they were changing there serial number style and by then they were on the left rear dropout. Some 65 bikes had an MO5 which stood for Murray of Ohio 1965. After these 3 digits was a 2 or 3 digit model number followed by and X and a 1 or 2 digit number that I will discuss momentarily.
MO5 = 65
MO6 = 66
MO7 = 67
**MO8 = 68**"

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Borrow Our Bikes - USF Campus Recreation

usfweb2.usf.edu/CampusRec/Outdoor/borrow.asp
A bike checkout includes either a cruiser bike, mountain bike, or hybrid bike, along withbike lights, a helmet, lock, and key. Checkout is free for current USF ...

Unfortunately, these older bike serial numbers for manufacturers that are out of business are very hard to determine the year. There are several sites which may assist you. Put vintage bikes or "Western Flyer" on Google. It will bring up those sites.

Serial Numbers are usually in one of two locations.

1. Turn the bike upside down and look at what is the very bottom of the frame where the pedals and cranks pass through. This is the bottom bracket shell. Serial numbers are commonly stamped here and will be a long series of numbers and letters
2. Occasionally they are also stamped inside the rear dropout on the left or right. The rear dropout is the part of the frame where the rear wheel is connected.

Matt @ roadragecycling.com

http://www.youtube.com/watch?v=eOdmMb90YEE
I may be late but I hope it helps, the safe is easy to break into if you use this technique

TrainZ costs 40$USD, so... they must provide you a serial number if you're download a LEGAL version.

Lost or Missing Serial Replacement:
If you meet one of the following criteria, you can send a request along with an administrative fee to Electronic Arts for a replacement serial/registration number.

• Conditions
• The product is 90 days past the purchase date
• The original serial/registration number has been discarded or lost

When sending a request for a replacement serial/registration number, please include the following:

• Items & Information to Send
• Money order or personal check for $10.00 USD per serial/registration number requested.
• MAKE THE CHECK PAYABLE to Electronic Arts.
• Note: If you are requesting serial/registration numbers for a collection pack, the $10.00 USD fee will cover numbers for all of the games included in the package.
• Proof of Purchase - located on the game’s manual. If you do not have the manual available, send a photocopy or picture of the game disk to verify ownership
• Note: It is not necessary for you to send us the physical disk. If, however, you decide to send us the physical game disk, please make sure you use a traceable delivery method. Electronic Arts is not responsible for products lost in transit
• Explanation of the situation
• First and Last Name
• Return Address
• E-mail Address
• Phone Number

Send To:
Electronic Arts Warranty Department
9001 N I-35 Suite 110
Austin, TX 78753

Don't know how to look up by serial number but if you have the VIN number, you can look up the bike at this site...
http://www.pronto-net.com/vin_app/vin.php
and get lots of info on it.