TYCO no longer lists individual roadnames for its passenger cars beginning with the 1968-69 and continuing in the 1969-70 and 1970-71 catalogs. The Penn Central passenger cars are featured in the 1970-71 catalog without information regarding their letter designation.

The kits also disappear with the 1968-69 catalog.

Listed as "Streamline Dual Lighted Combine Car," this passenger car had retail price of $4.98 in the 1960, 1961, 1962-63, 1963-64, 1964-65, 1965-66, 1966-67, 1967-68 and 1968-69 catalogs. The 1969-70 and 1970-71 catalog price this car at $5.00

The 1963-64 TYCO Catalog adds a kit version, #K520A thru #K520K, selling for $2.79 for this car. The kit version is again found in the 1964-65, 1965-66 and 1966-67 catalogs selling for $2.79. The kits, #K520A thru #K520L, are selling for $3.29 in the 1967-68 catalog.

TYCO lists an "Aluminum Body Passenger Car Kit" for the Combine, #K504, in the 1964-65, 1965-66 and 1966-67 catalogs priced at $4.98. The aluminum version kit, #K504, is priced at $5.98 in the 1967-68 catalog.

A "Metalized Chrome" version of this passenger car is available in two roadnames, B&O(#T520AC) and Santa Fe(#T520DC), selling for $5.98 as a Ready-To-Run model only in the 1964-65 and 1965-66 catalogs. The Southern Railway, #T520JC, is added to the chromed cars in 1965-66.