Looking for 1950 pop top part

Have you tried Pinball Resource? I think they have those.

Steve Young's Pinball Resource has it in the pop bumper cap section (playfield parts).

You need to order this one:

"Red Deco Domed L" which sells for $12 and it's a brand new reproduction part. About a third of the way down the page there.

http://www.pbresource.com/pfbumper.htm

Yes, but good luck. Sure would be nice to be able to search for parts on that site.

Search engines often let you search through a specific site. For example, try searching for

"bumper cap site:pbresource.com"

in your favorite browser. Works well when searching pinside.com or ipdb.com too.

/Mark