Dot quickie

[Grandma_Yiddo]

Radiogram 1-3 x ?a? Only clue I can think of is x-ray but that doesn't seem right. Can anyone help?

[sandyRoe]

looks OK

[bibblebub]

http://www.tfd.com/radiogram

radiogram: a photographic image produced on a radiosensitive surface by radiation other than visible light (especially by X-rays or gamma rays)

[Grandma_Yiddo]

Thanks a lot both of you.