To figure out what kind of trailer you have, you need to find serial numbers, VIN, markings, makes/manufacturers of equipment, paperwork – anything that could be a clue. If the first three digits start 1ZE, it is an EZ Loader Adjustable trailer. If the Vehicle Identification Number starts with first three digits of 1L8 it is manufactured by our Custom Trailer Division in Midway Arkansas. I had a friend fabricate from a piece of aluminum a stamped VIN number. If you provide them with those 5 numbers, they'll provide you with the complete 17 digit serial number. Alternate vin locations on ez loader trailers.
Some vintage trailer brand’s serial numbers are just sequential numbers and you might have to find someone else that has a serial number that is close to yours to estimate the year of the trailer. I called EZ Loader customer service and they provided two places where a 5 digit number is stamped on the trailer. They might embed the length of the trailer or the year of the trailer in the serial number. Secondly, not all serial numbers have any intelligence built into the code but some brands do. You may have to educate your DMV employee. They will ask you for the VIN and expect a modern format but vintage trailers used serial numbers. Those terms are used interchangably and the DMV has a hard time with this because they don’t normally deal with vehicles that are this old. The first thing to understand, a serial number is your VIN for a Vintage Trailer.