Lynn Bogue high quality Hunt Coaster Whirlaway Race Horse

Gorham Trayette 558B wine coaster.
Lynn Bogue Hunt artist signed.
Whirlaway race horse painted on high quality white milk glass center
in a raised design.
Rim is copper/brass.
I have two of these, in great vintage used condition.
The rims have some tarnish along the glass portion.
No chips or cracks to the glass.
Measures 4.5" diameter.