RAD buckle

[Gwar]

Better picture of the back, could these diamond shapes be the maker?

IMO these buckles are only attributed to Paulmann & Crone because the tabbed Rad examples ( P&C ) sometimes have visible markings left over from the deliberate erasure of the Sieper "Diamonds".
Furthermore this was probably done to create the illusion that they were in deed made by P&C or a better explanation is that P&C had some issues in production?? and had to out source until such problems were alleviated... I have posted a pic here of a RAD buckle with the proper maker mark and on a RAD buckle..
This was sold before I could do a in hands or further picture study... G

[Gwar]

Another example

[Gwar]

A few more pics of a P & C "Tabbed" buckle that currently resides in my collection as well.. Notice the faint "Diamonds" By the catch and the "Tell Tale" one that is still visible... R.S.S. produced...

[Ben Evans]

From the new pictures the double diamonds are an early makers mark by Richard Seiper & Sohne, Ludenschied, here is an example of a single makers mark on a Heer buckle

[TIMOWSKI45]

This is great information Gwar/ Ben, thank you for taking the time to reply. Greatly appreciated.