It is noted that all Ithaca built "Lefever Arms Co" guns of Ithaca design both Nitro Special & A grade are numbered above 100,000.
I own the highest known numbered gun in the side plated series, unless another has surfaced recently. It is an Ithaca assembled gun, is H grade with DS wood. It has a different SN on the barrels & frame only 4 digits apart. Both appear to be over stamped from a previous number. One number is 73,038 & the other is 73,042. Without getting it out to look I forget which is on the barrels & which is on the frame. It has 28" "Best London Twist" barrels, is an extractor gun, but was fitted with an Infallible SST. I can't prove it but highly suspect this was done at the Ithaca factory. It has the doll's head, cocking indicators & late type scroll engraving on the side plates, & is stamped H.
The wood however I say is DS as it has no escutcheon or tip in the forend & the stock has an uncapped half pistol grip, both features of the DS grade.
Could be a "Lunch Box Special" for all I know.