Thanks for the reply Terry. These will be used on some brand of European passenger cars. I think they might be Fleischmann.
If the Rapidos you have, include a flat shank with a hole in it, I sure could use a couple. (Most of the Rapidos I've seen have the common T-shank with a little nipple that engages the coupler spring.)
If you could mail me a few, I'll reimburse your postage. Please send me a private e-mail and I'll return my Texas address to you.
Thanks, again.
Ben