Hi PD's....& welcome Charles

...mmmmmmmmmmm the boiler if manufactured by a ...shall we say registered boiler building company or even a compentent owner boiler builder, must have a unique serial number which is actually stamped into the boiler casing and is not removable & not covered...I suspect the manufacturers name may also be required to displayed
This number is then recorded on the boiler test certificate which is required by Law [or the governing body of model boating clubs] for insurance purposes...... if the boiler is to be pressurised in a public area etc
We have a number of articles in our PD WEB pages on the rules & regs of model boiler certification kindly supplied by an experienced boiler building company principal
It is a lengthy topic & I will not attempt to qualify the detail here....
The attachment below is an example where the manufacturer, location of manufacture and the unique serial number is displayed .......
If you are considering using the boiler & engine......a good starting place would be your local model boating club........99% of members will only be too happy to assist you down the path of understanding your boiler & steam pressure certification requirements ....................Derek
PS....yes please post the images of the components at the other end of the steam tubes