Die links are most easily identified with very distinctive die identities and in very small coin populations. I have identified amongst the Carausian laureate bronze coinage an obverse die duplicate match with three coins. The reverses all read LITI AV but the Normanby (BM) specimen Pax is holding a branch and my two examples have Salus(?) holding a patera over an altar. Both reverses are at odds with the LAETITIA reverse legend but we must also remember that Carausius used Adventus reverse legends withstanding figure devices rather than equestrian ones.
The first coin in the link is from the great Normanby hoard from Lincolnshire. In the 50,000+ coins in the deposit there were 73 coins of Carausius including a single laureate bronze (in entry number 1580 in the hoard publication, British Museum acquisition number 1987,0647,426).
The other two specimens are in my trays, both bought in trade, from separate sources and about a decade apart and are reverse die duplicates of each other too with one showing evidence on the reverse of being overstruck on a Rome mint coin of Claudius II.
Surprisingly the Normanby publication makes no comment on the role of the bronze laureates in the monetary system of Carausius. There is, however, reference to two papers by Shiel, including one specifically on the laureate bronze series.
He is, I think, correct with his assertion, that there is no single role for these pieces. Three types re-postulated:
1. fraudulent types imitating the silver series,
2. a subsidiary denomination to the radiate base metal issues and,
3. base metal trial strikes
of precious metal issues.
Given the lack of similarity with the the precious metal
issues I would suggest that these three pieces represent a subsidiary denomination
form early in the reign.