Need help with ID and info
 

I cannot find the Maker and era for this side plate, also I have a matching frame and parts to serial #772 h block, it came with a wood bottom mag that has other letters stamped on it can anyone give info on the mag letter stamps and era of mag? Thanks

The sideplate looks like an Erfurt. Bill

Erfurt mag body(likely); base may be original but the stamps are not.
The stamps are not german and likely stamped "lately" to boost the magazine.
You can see the impression from common steel stamp sets, wrong font, and mis alignment; oL makes no sense.

Bill is right on, an Erfurt side plate, un-numbered so likely spare part.