Compare 1 source-linked mark variant recorded under John Grahame Heath. These are reconstructions for comparison, not source photographs or authentication evidence.
The long rectangular punch retains the three initials and both visible stops in their left-to-right sequence, together with the double border treatment visible in the photograph.
Maker labels and date or location statements follow the cited source records. Similar names across source collections have not been merged. Compare the photographed mark and the complete object before relying on a resemblance.