I recently bought a Veco 19BB off eBay; it had no box or instructions, but had not been run. I don't know much about these things other than that they're meant to be good, and the price was right. I assume that it's one of the modern Mecoa ones rather than an original, but it has a serial number (0011459) on the left mounting lug. Can anyone who knows about these things tell me exactly what I've got?

Thanks
Steve