Wanted: 13-Pin DIN A/B Switch

This may sound like a strange request but I have a need for a 13-Pin DIN
A/B switch. The reason is I use a SignaLink SL-1+ interface and a PK-232
and I am tired of having to remove the TS-570 to make the switc over.

I could make one but would prefer to buy on from someone like MFJ. I
don't think they make such an item

Dick, AA5VU