Is this as rare as they think it is?
http://www.ebay.ca/itm/Vintage-Henschel-70-525-TY176-Sound-Powered-Phone-Crank-Operated-WITH-BELL-RARE-/162141944634
?hash=item25c069bb3a:g:MDUAAOSw0fhXjq7Q]http://www.ebay.ca/itm/Vintage-Henschel-70-525-TY176-Sound-Powered-Phone-Crank-Operated-WITH-BELL-RARE-/162141944634?hash=item25c069bb3a:g:MDUAAOSw0fhXjq7Q