N&W "Experimental" whistle

[NW Mailing List]

The attached photos are of an "experimental" whistle formerly owned by Brian Maiher and being auctioned at https://ohio.hibid.com/lot/72898-217861-107961/norfolk-and-western-experimental-3-chime-whistle/?utm_source=Iterable&utm_medium=email&utm_campaign=newsletter&utm_content=thursday_8%2F13%2F20 by Milestone Auctions.  Did the N&W create many "experimental" whistles or does the abbreviation "EXP" have a different meaning.  As information, I do not have an interest in this item other than curiosity.

Frank Scheer
f_scheer at yahoo.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: N&W_Experimental-3-chime-whisle_1.jpeg
Type: image/jpeg
Size: 42559 bytes
Desc: not available
URL: <https://pairlist6.pair.net/pipermail/nw-mailing-list/attachments/20200813/34548974/attachment-0003.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: N&W_Experimental-3-chime-whisle_2.jpeg
Type: image/jpeg
Size: 131072 bytes
Desc: not available
URL: <https://pairlist6.pair.net/pipermail/nw-mailing-list/attachments/20200813/34548974/attachment-0004.jpeg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: N&W_Experimental-3-chime-whisle_3.jpeg
Type: image/jpeg
Size: 131072 bytes
Desc: not available
URL: <https://pairlist6.pair.net/pipermail/nw-mailing-list/attachments/20200813/34548974/attachment-0005.jpeg>