That’s true, or at least plausible, and not even necessarily a consequence of their various closures, as those same mismatches are documented in Roger Rule’s Rifleman’s Rifle on the Winchester M70. I have copies of both books, my copy of the Ithaca book is signed by Walter Snyder.
So no argument there, except to say that the barrel has the model designation and the receiver has the serial number (for 37/87’s made after 1963), so for there to exist a ‘98 M87, it would require a pre-‘96 King Ferry barrel (they stopped stamping the M87 designation in 1996) mated to a receiver whose serial number corresponded to a 1998 DOM. In other words, if a mismatch occurred, then the barrel sat around the factory for 2 years after its manufacture. There were no upheavals at Ithaca in the years spanning 1996-98 (not until 2002, and then the big move to Upper Sandusky in 2005) so although the scenario is not impossible, it’s perhaps unusual.
Also it’s worth noting that the older 37’s with serial number block lower than 855000 corresponding to 1963 DOM had the SN stamped on both the barrel and receiver, as barrels were non-interchangeable without custom fitting and checking for headspace.
I currently own three Ithaca 37/87’s:
- 1966 blued 20” DSPS M37 with rifle sights and short mag tube
- 1980 parkerized 20” DSPS M37 with rifle sights and full-length mag tube
- 1994 parkerized factory 14” DSPS M87 with rifle sights.
The last one is rare — I’m told the only one exported to Canada, but I have no way to verify that claim so I take it with a grain of salt.