Interesting

My MFG date is 2 days before yours, but my serial is a little higher

Yours is 065902
Mine is 066252

ij_serial.jpg

Your S/N label also has its amperage and hertz values swapped. It should be 8 amps and 60 hz

Sample IJs had a different Super Jackpot insert, at least 1 different lamp board under the playfield, stainless POA rails, lost plastic from the factory with illumination from the factory, speaker panel lamp board from the factory, slightly different artwork on several plastics, no buy in button, different bolts on the side of the cabinet for the playfield slide assembly, and probably a few other minor differences.

There's a 5 digit model number

It seems digit 1, 4 and 5 are in common across all IJs.
digit 2 and 3 are dependant on what country the game went to (Country Code) and potentially what coin door setup the game had.

I've tried to make sense of the 2 digit country code for WMS pins several times and always ended up scratching my head.

Don't mean to add any fuel to the flames here, but I was looking at a game I have, and noticed its serial # decal had rounded lower edges!

wcs_serial.jpg

Of course it's a sample. I know IJ and I could tell it's a sample!

The Midway tag is from a WCS 94 Not an IJ

IJ was made as a WMS game, WCS as a Bally/Midway.

Bob Antelman is a nice guy. I've seen his restoration work, and it's not bad. Bob Antelman is a Doctor who restores pins in his spare time. It's not his full time job or his living.

There are a lot of hobbyists who restore pins in their spare time. I fit that description.

You may not have a critical enough eye to compare a Bob Antleman playfield to a HEP playfield. That's not unexpected, as you are relatively new to this hobby. Bob has restored a few, HEP has restored hundreds. Yes, Bob's work will look miles better than most routed games. But someone with a bit more of a seasoned eye will be able to tear it apart pretty easily.