[carlfromsouthafrica]

I posted some larger and clearer pictures. Have a look. I am convinced the stamp between the firing pins is associated with a specific manufacturer, just not sure which one or where to go and research identifying markings.

Somebody told me that the lack of manufacturer's name between the barrels could be explained as "guns ordered in bulk and imported from an overseas manufacturer, allowing the local distributor to stamp his own barrels". Sounds highly unlikely to me.