Googled L Lamay:
An ad from 2011: $1,950 obo:
"Description: Double Bass Bow - Double Bass bow maker american L. Lamay # 572
Retired Juilliard grad and Symphony Bassist, must give this up
Bought it directly from Lawrence Lamay maybe around late 70's or so.
French Style Bow
# 572 marked on the stick and of course has his stamp on the side right after the grip L Lamay
Fantastic bow you can't find these anywhere that I can tell
round stick, nice and straight, w/nice arch,
weight not sure around 140 grams,
large tip , smallish frog ( i have a small hand)very comfortable to hold and control
measures 27 1/2 inches.
The very tiny tip of the Ivory that wraps around to the front of the tip is missing.
This bow makes the bass boom and speak very articulately. I had an old Italian bass, the combination was fantastic
Balance point just a little more than 1/3 of the way down the stick from the frog end
needs a rehair I have not used it in a long time."
Robertson and Sons has a French Bow available in the $1.1k to $2.5k category.
The Bassment offers #119, for $2.5k: