Not all Hetchins designs have been positively identified. In the 1960s and 70s, a number of frames were built using industry standard lug blanks. They often bear a resemblance to Italias or Keyholes. A few examples follow below. (One-offs built to customer specs are not included here.)

Left: box-standard Prugnat lugs,
often seen on Track Supreme models.

Below: other unnamed designs.