if available at a good price, there's always something one can do with the stuff. brass can be troublesome, esp if it's cast. in sheet form, it should be ok to engrave. i have had little trouble working the stuff in sheet form. then again, i never knew specific alloy info.
the centenial brand was very good for me. one had to grind a flat to allow indexing for sharpening. it can only be shaped with diamond or special "green wheels". ordinary grinding wheels will not work for carbides.
i failed to mention that some of the old engraving books are free on the net. the entire book can be enjoyed on your computer, one page at a time. one can even print some of the pages. i don't think there's a copyrite problem. you can get them using google.
i usually don't use it any more for direct engraving. rather as a quick layout to be hand engraved over. i used it a lot for "quick logos" and such. stuff that would be repeated over and over again. the result was genuine hand work laid out with templates of my own creation.
trying to layout...