Anyone recognise this head work ?

[Foz]

   Does anyone know who may have done this head work on my flowed and ported head,it has 2mm oversized inlet and exhaust valves ,heavy duty springs and retainers beyond that I have no knowledge about it. It's not one of Mr Uppertons and there is no stampings or markings on the head 

[kokolis]

Common work, could be anyone.