Ithaca Skb 600 Serial: Numbers

| Year | Features | Serial Number Range (approx) | | :--- | :--- | :--- | | | No choke tubes; fixed Mod/Full; glossy stock; "Ithaca Gun Co." on left receiver. | 1000 – 8000 | | 1973-74 | Introduction of "Ithaca-SKB" on receiver; dull oil finish on stock. | 8001 – 20000 | | 1975 | First choke tube models (marked "Ithaca Recoil Control Choke"). | E-20000 – 28000 | | 1976 | Vent ribs become standard on field models. | L-15000 – 25000 | | 1977 | "6" prefix appears; laser checkering begins. | 6-30000 – 6-39000 | | 1978 | Last SKB imports; some have "Made in Japan" removed. | 6-40000 – 6-48500 |

The Model 600 is easily distinguished from its siblings by its silver-nitride finished receiver and extensive scroll engraving. Higher-grade versions, such as the 600 Skeet or Trap models, might feature target-specific serial sequences or additional stampings. If you find a serial number with a CM prefix, you likely have a Magnum model, which was chambered for 3-inch shells rather than the standard 2.75-inch. ithaca skb 600 serial numbers

From the early 1970s until 1978, Ithaca imported these shotguns under the model designations 600 (field), 700 (field with select walnut), 900 (trap/skeet), and later the 280 (over/under) and 100 (semi-auto). After 1978, the relationship soured, and Ithaca briefly sourced shotguns from Fausti (Italy) before eventually ending the line. | Year | Features | Serial Number Range

: Community-maintained databases often have the most accurate "survivor" data for matching serial ranges to purchase receipts. current market value of specific Model 600 variants? | E-20000 – 28000 | | 1976 |

Many Ithaca SKB over-unders feature an "S" prefix followed by several digits (e.g., S5615500 ). These are chronological Japanese production numbers.