July 15 & 16, 2026 Automobilia, Petroliana & Soda Advertising
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This lot is closed for bidding. Bidding ended on 7/15/2026
SSP. C. 1940s. Harbor Petroleum Products Company, Los Angeles, California. An excellent example of this iconic piece from Harbor showing Airplane graphic. CONDITION: Showing full color and gloss throughout the field, with no notable chipping in the inner or outer fields. Fields do show some areas of surface scratching and general storage wear, but overall very clean. Sign shows light chips at the mounting holes with scattered chipping along the entire outer edge, some of which has been touched-up in the black bordered area. An exceptionally clean example with tremendous display power, and an icon of early California Petroleum history.

Condition: (AGS GRADE 90).

Item Dimensions: 39" x 35".
Name
Value
CENTERING
10
COLOR
9
EDGE (LOWER 50%)
7
EDGE (UPPER 50%)
7
FACTORY FLAW
8
FIELD (INNER)
9
FIELD (OUTER)
8
GLOSS
8
MOUNTING HOLE(S)
7
SHARPNESS
9
SURFACE
8
HARBOR PETROLEUM PRODUCTS PORCELAIN SIGN WITH SEAPLANE GRAPHIC AGS 90
Bidding
Current Bidding
Minimum Bid: $20,000.00
Final prices include buyers premium: $52,800.00
Estimate: $40,000 - $80,000
Number Bids: 13
Auction closed on Thursday, July 16, 2026.
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