Ivory Beads had or may still have one that they suspect was such a Parker.

"verifyable" is subjective in this case. A verifyable "back door" Parker is a contradiction in terms. To truly be a "verifyable back door Parker" would mean that there are Parker Bros. records to prove it went out the back door instead of being a documented sale.

Jack this thing was a good 9 or 10 inches long barrel moven in it when u opened and closed the gun. Do barrels get when shooting trap? ch