The complete upper bearing has part # H264815, which has a cone ID of 26mm, a cup OD of 48mm, and a height of 15mm.
The lower bearing has part # H305014, which has a cone ID of 30mm, a cup OD of 50mm, and a height of 14mm. Hmm, there seems to be a pattern here?

Do a search for those part numbers and you should find multiple sources. Jag, it might be worth a shot to see if the H264815 cone would mesh with the Seeley 7200 cup?