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The most valuable Service Packs LEGO sets from the 1970s by current market value. This list ranks 16 sets by current BrickPicker value, refreshed from live market data. Right now the top spot belongs to Four Locomotive Wheels at $207. The top 5 alone account for about 81% of the value on this list. Every entry links to its full price history and marketplace listings. Updated 2026-07-22.
Top 5 hold 81% of this list's value ($497).
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| Name | / piece | |||
|---|---|---|---|---|
| 1 |  Four Locomotive Wheels Service Packs · 1977 | $207 | +10304% | $25.88 |
| 2 |  Train Power Pick-Up Blocks Service Packs · 1977 | $75 | — | $37.49 |
| 3 |  Electric Wire Service Packs · 1977 | $42 | — | $21.00 |
| 4 |  Replacement Motor 12V Service Packs · 1977 | $41 | — | $41.49 |
| 5 |  Propellers, Wheels and Rotor Unit Service Packs · 1977 | $37 | +1748% | $2.45 |
| 6 |  Locomotive Piston Assemblies Service Packs · 1977 | $18 | +518% | $3.08 |
| 7 |  Digger Bucket Assembly Service Packs · 1977 | $18 | +488% | $5.86 |
| 8 |  Chain Links, Small Service Packs · 1977 | $14 | — | $0.58 |
| 9 |  4.5V Motor Service Packs · 1978 | $9 | — | $8.50 |
| 10 |  Magnetic Couplings for Railway Car Service Packs · 1977 | $8 | — | $1.96 |
| 11 |  Axles and Bushes Service Packs · 1978 | $7 | +135% | $0.29 |
| 12 |  Train Sliding Wheel Blocks Service Packs · 1977 | $7 | — | $3.50 |
| 13 |  Boat Weight, Red Service Packs · 1977 | $6 | — | $6.32 |
| 14 |  Gear racks and turntables Service Packs · 1978 | $4 | +148% | $0.92 |
| 15 |  Two Rubber Crawler Tracks Service Packs · 1977 | $3 | +162% | $1.30 |
| 16 |  Four Motor Wheel Bushes Service Packs · 1977 | $2 | +77% | $0.42 |
The 1110 Four Locomotive Wheels is the most valuable, worth about $207 on the current market.
Around $207 — that's the current BrickPicker value of the 1110 Four Locomotive Wheels, the top-ranked set on this list.
This list ranks 16 service packs lego sets of the 1970s by current market value, refreshed from live sales data.